Sweet Shoppe Designs

Used Purrfect Kitty Doodles and Purrfect Kitty Large Bundle

Filling the doodles with paper is actually quite simple. Here is how I do it. I work in Photoshop. I used the magic wand tool and made a selection outside of the cat I wanted to filled. I then expanded the selection a few pixels to make sure my edges will end up covered. (you can do that now or after the next step) Now select the inverse. If you had a paper sitting on a layer below, you can now choose mask on the layers pallet and it will only show what is inside the marching ants from your paper
or
you can make a new layer below the cat doodle. The fill it with color. Now add a paper above it and alt click between the layers in your pallet to clip the paper to the cat shape you just made. Both techniques work equally.