So after youve finished placing your clips, its always a good idea to make sure you go back and render everything so its all in the best quality possible. When I say render I dont mean export but just render the sequence so just hit Enter and it should render by itself. And every time I think im done I go back and re watch it and theres always a few things I missed. I actually didnt double check in my first AMV but luckily it wasnt a major issue but still always check and see if you have any problems to fix, even if its small, make sure you have it all ready and once thats finished theres only a few things left to do!