I think it would be a shame if we get an ethos of "either you produce a professional quality pic or you shouldn't enter" - which is the message I'm getting from some comments. These challenges are meant to be fun. Some people don't have so much skill and some don't have so much time, but I myself would prefer that they enter what they can than that they sit on the sidelines. As for "Bryce only", yes, you can hammer in a nail with a saw if you like a challenge. See what a saw is capable of! Push it to the limits!