I know this!
Marvel Zombies has to be one of my all time favorite comic books! In fact, it was really the thing that got me involved with reading comic books in the first place (or at least buying them). I liked this art, but it could have been better. It just does not do much for me when you do not have a background of any kind on this. I'm not sure if what you have here or a white background would be considered "blank". You still captured the Zombie Spiderman pretty well.
This seemed more like an original drawing than a drawing of the Spiderman from "Marvel Zombies". Trust me, I would know every detail of his appearance. This is still good because it uses some really flashy colors and the bones are drawn well. I really like his feet because I just have always been fascinated by feet that go like that. It looks like he has a leech for a foot.