Did you start copying the painting this month after hearing the challenge? It should be just fine. I thought the rule was you couldn't pull work you did last year and resubmit it, not that you couldn't copy your or someone else's work. This isn't a finished work that has been sitting on your computer or something out of another bryce gallery site you posted long ago? I have a harem room in the marketplace that would be great for the challenge. Problem is I've had four months off and on to work on it. I even had the basic room done with all of the textures set before the start of the challenge. I also have a jason and the argonauts scene with a temple built, skeletons and warriors posed etc. Add to this a greek Trireme pulled into bryce and textured I could drop into the scene. I could pull of a fantasy scene in about a day using parts from other work. Using these bits and elements would give me a big leg up. I also don't post finished scenes. I don't use them because I see them as the non-original work implied in the rules.