- Sure, why not? 2. Whatever works, as long as the challenges are interesting. Would a reference be necessary? I don't believe a reference is all that necessary unless it's a specific item being made. (A theme could be cars, and anything could work. Now if the theme were F1 racers, then sure - drawings/blueprints would help.) 3. One month is ok for most stuff (if the ideas aren't too far out.) 4. I'm more of an inorganic modeler, but it wouldn't stop me from trying different stuff. (You could cater to a group, or even have two separate challenges. But I think if it's to really be a challenge, then people should be open to trying new stuff.)
Barbequed Pixels?
Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.