Well, this Challenge thing sounds interesting... never done one of these before, so thought I'd have stab. ;-)
So, I present "High Pass Flyers", a sharp comedy.
The figures were rendered separately in 3D, after creating their texture maps in Photoshop, then worked on in PS, after which it was all boshed together in Photoshop. A credit, and thanks for a grungy Victorian backdrop which was overlayed to add some subtle texture goes to freaky665.deviantart.com.
Wow, this is fun! Thanks for looking, and comments welcome.
I know that there's no judging of offsite linked images, but for anyone wishing to check out a larger version, go to http://www.barrydownard.com/High_Pass_larger.jpg
Cheers, thanks to Colin, the judges and sponsors, and good luck all!