You can actively contribute to the development of BrainBread by posting your customized zombie model skins in this thread in our forums.
We will include some of the best (i.e. most creative) skins into the final release of BrainBread.
Everything you need for the modification can be found in the BrainBread zombie SDK.

Contest conditions:
Post finished models in the thread "Contest Entries" in the Brainbread forum.
Don't modify the model, only the skin has to be done.
Have fun!

If you have any questions don't hesitate to contact LordScottish or ask directly in the news comments.