Holding the mini movie still...

Ok, I made a mini movie by pasting each frame into the picture and then saving it, but it is very shaky, like the movie sometimes moves a little out of the frame. Is there a special way to make sure it won't move out of the frame and that they are right on top of eachother, or do I just have to have a really steady hand? If anyone has any tips please let me know. After I can get the icon on my web site I'll try to show you