Thanks, Ted.
Dusky taught me the bluesceen effect (transition in Windows movie maker) with the characters in front of a blue background.(that way, it would be transparent around a charter to put in front of any background or movie) The only trouble was, if the character had any blue, or a color close to blue, you could see through part of the character, so I did not use it much.
Then I discovered if I used an overlay (picture, gif or movie) that had an object in it, any blue would be transparent. So I thought, well, if I color a TV screen blue, you can see the background in the screen only. (as long there was no blue or similar color anywhere else in the picture.
Then I started putting blue in all pictures I wanted to use as an overlay.
