Scratch

Hi, I'm wondering how to draw something (of course I'm Using pen functions) but instead of drawing just over the stage I want to draw over a sprite. doing this will allow me to move the draw I made, my idea it's to make a stick man animation maker program, but, I only can draw over the stage.

I tried a multi page background, but when I change the background the drawing remains, it's doesn't change with the background.

any ideas.
Examples: I had tried many tips, but all fails   

I also posted this in the advance topics forum.