It's great that you submitted this in October. This is a great picture because it's good to see your take on SpongeBob. This is, of course, in itself, a unique take. I don't even know how he could become a zombie. Who cares, this is wonderfully detailed. I'd like to see the other SpongeBob characters like that.
All of his features are nicely exaggerated. I especially like the background colors. It's hard to tell what's what in this. The nails, blood, and flesh are all done in a unique manner. I hope you had a great Halloween this year and forever!