Update messages.js

src/core/messages.js

@@ -10,6 +10,6 @@ export function buildNextMessage(frameIndex, frameCount) {
     role: 'user',
     content:
       `we are trying to create a gif using this img.` +
-      `KEEP IMAGE THE SAME & make the image move by slightly editing this image`
+      `KEEP IMAGE THE SAME & generate 1 frame ahead - make it move by slightly editing this image`
   };
 }