Love this! It's very you, Jenna. Foreground... Hmmm. I can't really think of anything... Maybe some more zombies. Right now their placement is very symmetrical. Other than that... nope, looks good. I like your palette, the angle, textures, poses...
You COULD potentially bring some of those oranges into the foreground, but I'm not fully convinced you even need that.
Crap! good point, I didn't notice how symmetrical it was until now. Thanks Alyssa! :-D