The LightPainters all mostly post into Photography Lovers but they do have their own community and you can learn boatloads of tricks and techniques from them. These more artistic approaches to photography would fit fine in Photography Lovers or here in Alien Art.

I just figured if you have multiple posts you could spread them around into the communities so you don't 'spam' just one community. I'm not saying you are or will spam but it's something to consider if you have a lot of content at once. Otherwise, you can just space them out a bit timewise to not all drop around the same time/day in just one community.

I think you are really going to enjoy all the stuff you can do with these methods!