Here at blacklight-club we are pretty liberal with submissions. However I do want to lay out a few rules...
1. The image must contain something fluorescent. A picture of yourself or your pet under a blacklight won't be accepted. (If you have fluorescent body paint on, or your pet has a fluorescent item with them, that's another story.)
2. No blurry/grainy images. I know it can be hard to get a good photo in low light, I myself had trouble photographing my blacklight art. I ended up recruiting a friend with a better camera than me, and a tripod. If you don't have a friend or a tripod, try setting your camera to the fastest exposure and bracing yourself against something to limit movement.
3. No DA watermarks. I find them too big and distracting. If you're worried about your art being stolen, create your own watermark. Send me a message if you need help with this.