This is a panel from an issue of Cable & Deadpool from a couple years back. I don't remember the issue number, but it's the one where he goes back in time and teams up with Captain America and Bucky in WWII.
Sometimes individual comic panels can be pretty cool on their own, out of the composition of the full page where they might get overlooked, and I want to practice my Photoshopping skills, so I thought it would be cool to pull out a panel I liked form an old issue.
I was looking through tutorials I'd downloaded, and trying different coloring styles than I usually use, and I think it could look pretty cool, but I definitely need more practice with it.
Any coloring suggestions or critiques would certainly be useful.