More Tablet Practice

I'm getting a little better with using the tablet to draw/color stuff. Unfortunately, for some reason, Photoshop doesn't have an easy shortcut for drawing simple, straight lines. So my attempts to draw backgrounds or anything else the requires straight (or slightly diagonal) lines look like crap. If there are better digital drawing programs out there for Luddites like me, I'd love to hear about them!

Anyhoo, here's my latest attempt. Coloring one of my dopey Sly Cooper romance pictures!