I hope this helps.
Sorry for such a late reply, you might not even care anymore, ahh. D;
But thank you-thank you! I wasn't sure what I was doing in that panel, obviously! Next time I need to make a similar pose- and I'm sure I will have to, I have a few more angles like that planned in this comic- I'll keep that in mind and hopefully make it a lot better.
Did you use Paint?
Nope, only animals.
There is never any real explanation of it though. (A plot hole you could say, but it never needs to be addressed anyways XD)
Well, basically. They're not un-dead, and they die like normal animals, but they're crazy like the zambees