I have a finished project that includes transitions, text, green screen foreground, ext. I'm exporting it as Apple ProRes 422 on to desk top. When I watch it though, everywhere I implicated a text or picture including the outline of the person in front of the green screen it has lines on all the edges. Can I put this finished project into a new time line with new format settings. like the frame rate, resolution and file format? If so I'll need step by step instructions. if you have any suggestions please inform. thank you so much for your help.

I'd have to see an example of what you're talking about. Change the format won't change what you're seeing. Verify in the Properties you are set to playback original or optimized media. Go to the File menu and delete all render files for that Project. What is the original format of the video clips?