diff --git a/src/components/RefinePromptModal/CompareFunctions.tsx b/src/components/RefinePromptModal/CompareFunctions.tsx
index abb2ed1..276481a 100644
--- a/src/components/RefinePromptModal/CompareFunctions.tsx
+++ b/src/components/RefinePromptModal/CompareFunctions.tsx
@@ -12,7 +12,6 @@ const CompareFunctions = ({
   originalFunction: string;
   newFunction?: string;
 }) => {
-  console.log("newFunction", newFunction);
   const highlightSyntax = (str: string) => {
     let highlighted;
     try {
@@ -25,17 +24,17 @@ const CompareFunctions = ({
   };
   return (
     <HStack w="full" spacing={5}>
-      <VStack w="full" spacing={4} maxH="65vh" fontSize={12} lineHeight={1} overflowY="auto">
+      <VStack w="full" spacing={4} maxH="50vh" fontSize={12} lineHeight={1} overflowY="auto">
         <DiffViewer
           oldValue={originalFunction}
           newValue={newFunction || originalFunction}
           splitView={true}
-          hideLineNumbers={true}
           leftTitle="Original"
           rightTitle={newFunction ? "Modified" : "Unmodified"}
           disableWordDiff={true}
           compareMethod={DiffMethod.CHARS}
           renderContent={highlightSyntax}
+          showDiffOnly={false}
         />
       </VStack>
     </HStack>
diff --git a/src/components/RefinePromptModal/RefinePromptModal.tsx b/src/components/RefinePromptModal/RefinePromptModal.tsx
index 0983aaa..838fabc 100644
--- a/src/components/RefinePromptModal/RefinePromptModal.tsx
+++ b/src/components/RefinePromptModal/RefinePromptModal.tsx
@@ -11,12 +11,16 @@ import {
   Text,
   Spinner,
   HStack,
+  InputGroup,
+  Input,
+  InputRightElement,
+  Icon,
 } from "@chakra-ui/react";
+import { IoMdSend } from "react-icons/io";
 import { api } from "~/utils/api";
 import { useHandledAsyncCallback } from "~/utils/hooks";
 import { type PromptVariant } from "@prisma/client";
 import { useState } from "react";
-import AutoResizeTextArea from "../AutoResizeTextArea";
 import CompareFunctions from "./CompareFunctions";
 
 export const RefinePromptModal = ({
@@ -56,12 +60,20 @@ export const RefinePromptModal = ({
     <Modal isOpen onClose={onClose} size={{ base: "xl", sm: "2xl", md: "7xl" }}>
       <ModalOverlay />
       <ModalContent w={1200}>
-        <ModalHeader>Refine Your Prompt</ModalHeader>
+        <ModalHeader>Refine with GPT-4</ModalHeader>
         <ModalCloseButton />
         <ModalBody maxW="unset">
-          <VStack spacing={8}>
-            <HStack w="full">
-              <AutoResizeTextArea
+          <VStack spacing={16} pt={8}>
+            <InputGroup
+              size="md"
+              w="full"
+              maxW="600"
+              boxShadow="0 0 40px 4px rgba(0, 0, 0, 0.1);"
+              borderRadius={8}
+              alignItems="center"
+              colorScheme="orange"
+            >
+              <Input
                 value={instructions}
                 onChange={(e) => setInstructions(e.target.value)}
                 onKeyDown={(e) => {
@@ -71,12 +83,41 @@ export const RefinePromptModal = ({
                     getRefinedPromptFn();
                   }
                 }}
-                placeholder="Use chain of thought"
+                placeholder="Send instructions"
+                py={7}
+                px={4}
+                colorScheme="orange"
+                borderColor="gray.300"
+                borderWidth={1}
+                _hover={{
+                  borderColor: "gray.300",
+                }}
+                _focus={{
+                  borderColor: "gray.300",
+                }}
               />
-              <Button onClick={getRefinedPromptFn}>
-                {refiningInProgress ? <Spinner boxSize={4} /> : <Text>Submit</Text>}
-              </Button>
-            </HStack>
+              <InputRightElement width="8" height="full">
+                <Button
+                  h="8"
+                  w="8"
+                  minW="unset"
+                  size="sm"
+                  onClick={getRefinedPromptFn}
+                  disabled={!instructions}
+                  variant={instructions ? "solid" : "ghost"}
+                  mr={4}
+                  borderRadius="8"
+                  bgColor={instructions ? "orange.400" : "transparent"}
+                  colorScheme="orange"
+                >
+                  {refiningInProgress ? (
+                    <Spinner boxSize={4} />
+                  ) : (
+                    <Icon as={IoMdSend} color={instructions ? "white" : "gray.500"} boxSize={5} />
+                  )}
+                </Button>
+              </InputRightElement>
+            </InputGroup>
             <CompareFunctions
               originalFunction={variant.constructFn}
               newFunction={refinedPromptFn}
@@ -85,13 +126,14 @@ export const RefinePromptModal = ({
         </ModalBody>
 
         <ModalFooter>
-          <HStack spacing={4}>
-            <Button onClick={onClose}>Cancel</Button>
+          <HStack spacing={4} pt={8}>
             <Button
-              colorScheme="blue"
               onClick={replaceVariant}
               minW={24}
-              disabled={!refinedPromptFn}
+              disabled={true}
+              _disabled={{
+                bgColor: "blue.500",
+              }}
             >
               {replacementInProgress ? <Spinner boxSize={4} /> : <Text>Accept</Text>}
             </Button>
diff --git a/src/server/utils/deriveNewContructFn.ts b/src/server/utils/deriveNewContructFn.ts
index 65b3611..5614744 100644
--- a/src/server/utils/deriveNewContructFn.ts
+++ b/src/server/utils/deriveNewContructFn.ts
@@ -40,6 +40,59 @@ const requestUpdatedPromptFunction = async (
 ) => {
   const originalModel = originalVariant.model as SupportedModel;
   let newContructionFn = "";
+  const usefulTips = `Chain of thought means asking the model to think about its answer before it gives it to you. This is useful for getting more accurate answers.
+  
+  This is what a prompt looks like without using function calls:
+  
+  prompt = {
+    model: "gpt-4",
+    stream: true,
+    messages: [
+      {
+        role: "system",
+        content: \`Evaluate sentiment.\`,
+      },
+      {
+        role: "user",
+        content: \`This is the user's message: \${scenario.user_message}. Return "positive" or "negative" or "neutral"\`,
+      },
+    ],
+  };
+
+  This is what one looks like using function calls:
+
+  prompt = {
+    model: "gpt-3.5-turbo-0613",
+    stream: true,
+    messages: [
+      {
+        role: "system",
+        content: "Evaluate sentiment.",
+      },
+      {
+        role: "user",
+        content: scenario.user_message,
+      },
+    ],
+    functions: [
+      {
+        name: "extract_sentiment",
+        parameters: {
+          type: "object",
+          properties: {
+            sentiment: {
+              type: "string",
+              description: "one of positive/negative/neutral",
+            },
+          },
+        },
+      },
+    ],
+    function_call: {
+      name: "extract_sentiment",
+    },
+  };  
+  `;
   for (let i = 0; i < NUM_RETRIES; i++) {
     try {
       const messages: CompletionCreateParams.CreateChatCompletionRequestNonStreaming.Message[] = [
@@ -49,7 +102,7 @@ const requestUpdatedPromptFunction = async (
             getApiShapeForModel(originalModel),
             null,
             2,
-          )}`,
+          )}\n\nDo not add any assistant messages.`,
         },
       ];
       if (newModel) {
@@ -59,6 +112,10 @@ const requestUpdatedPromptFunction = async (
         });
       }
       if (instructions) {
+        messages.push({
+          role: "system",
+          content: `Here is some useful information about prompt engineering: ${usefulTips}`,
+        });
         messages.push({
           role: "user",
           content: `Follow these instructions: ${instructions}`,