ok first make the animation of your choice
2nd save it as a .GIF
3rd put it into windows movie maker
4th add credits titles or music .. what ever u want to
5th save as a movie ( do not save as, you need it to be .wmv)
6th go to youtube
7th click upload and browse for your animation in the .wmv section
8th and finally upload it, this might take a minute or two.
I hope this helps with uploading videos onto youtube
enjoy :)