I'd like to help anyone who's got a game tool in mind, but wants to make sure all the steps are accounted for and the interactions are sorted out before diving into the programming and realizing something hadn't been considered. And I can do some visual design work as well, maybe some icons and other UI bits if needed.
I've designed a few level & puzzle design tools so far, and I've been doing UX research & design since I was your age. I mean, maybe. Kinda depends on how old you are.
Let me know if you'd like some help!