Pakled, as long as the final render was in Poser and finished after the start of the challenge, its OK. You can (and in this challenge must) go to postwork, so that's OK too. If in your postwork you alpha channel in more stuff, that's ok too. A Bryce render with Poser content is not ok. The final render must be Poser. However, a Bryce background in Poser is OK. I think this particular challenge lends well to multi app images as long as final render is Poser with some Poser characters etc in the scene.