You might be able to post it at Renderotica, which I have found to be a very nice website which doesn't restrict artistic vision. Though some things I have seen there I have found to be disturbing, but I'd perfer that to censorship. Although I understand why Renderosity wants to keep such stuff off of here, what's obsene is highly subjective. Perhaps a better solution would be an adult verification system here that would only allow adults to see images with sexual content.