Thought you might have given up on it after red-issue brought out their own poster. Don't know if it's still there but it was a sticky at the top of the forum if you haven't already got it.
Anyway, yes I'm still up for it but depending on how complicated it is going to be I'm not sure if I can get it done on time.

It's the 28th isn't it??
It all depends on what idea you wanted to run with and how easy I can find pictures to chop up. Sometimes great pictures to use are easily available and I knocked out a couple in that series I did for Achtung in less than hour but a couple of them took 7-8 hours because I had to do a load of manipulation before pasting them in after spending at least an hour or two on google image search in the first place. I'll do my best for you though.