Not bad, keep practicing isometric pixel. And here is the real zombie attack isopix megapont.ru/work_1.html

Good luck in getting a pro-level. 

 Thanks for your comment and advise. It;s always nice to get feed back. Some of the pixel work I do is used for prints, making it very costly to use a full range colour palette. I will up try creating some with the fuller palette just for online I think,

Again thank you for your feed back, . If your interested at seeing the full zombie picture please look at my website link on my profile, the full version is under pixels link. 

Cheers 

Very, very nice attention to details in this one. I keep finding little scenes, very nice.

However, I think the whole piece suffers from too much overall contrast. It's really hard to read what is going on. You should think about working on a proper color palette to differentiate instead of solely relying on the black outlines, what you are doing now. Also, shadows would really help.

Extra points for zombie in teddy bear costume!