Well, to make his mouth move just create a small line. Then, change the colur to white and just put it up to his face. If you want sound then just Google free sound effects.
you have to open your gif's in movie maker and in there it will give you the option to narrate it with a microphone.
She pivoted her body around to talk to the person behind her.
You have to make it.
pivot
go to the create figure type in file on pivot 3
make one yourself
rotation
First, you click file, then click stickfigure creator, make Ben 10 stuff! P.S, if you have Pivot 3 Beta, you can make sprites.
You would change the source data and refresh the pivot table.
You can easily make them in paint. Save them and open sprite in pivot find it and open it simple.
Well first you do have to download the file but its free and after that you can just make your own pivot videos for free.
You can make it in flash or in pivot stickfigure animator.