I'm a native German speaker, and if you want to give some work of yours a German title, or use a few terms or lines of German language, I can translate for you, or check your grammar/word choice if you already translated it.
Up to a handful of lines I'd do for free.
I'd translate small stories/games/whathaveyou for token payment, but only up to ~1500 words; at the moment I'm not able to commit to big projects.
I may also be able to help with "German-picking", like if a name is weird or normal, or what kind of mistakes a native German speaker with mediocre English might make, or whatever not too in-depth questions about (life in) Germany.