There are a lot worse nervous tics to have than that xD
In regards to writing people of color specifically, one thing I'll add is that roleplayers can sometimes have the tendency to fixate on things like eye and hair color in their RP—which isn't necessarily bad, of course, but they can additionally imply a certain level of importance to that color variation, variation which most people on Earth simply don't have. I haven't seen it especially much here, but having a section in, say, a personal description for hair color and eye color is pretty Eurocentric when the majority of people in the world will have dark hair and dark eyes as a rule. I know that culturally in the West we put a lot of significance into those things (feisty redheads or pure blue eyes or what have you) but they're also tropes reflective of a white-dominated culture that don't really apply to other people. There's also a tendency to ignore that, i.e. have a character who's Asian except for their blue eyes (which really just makes me think of Toni Morrison and The Bluest Eye) in a way that's uncomfortable because it can be read to say that PoC characters aren't interesting enough unless they have colored eyes. The one exception I'd make would be anime settings because of mukokuseki, because then everyone has colored eyes, but that's a trope of the genre rather than a player choice per se. Outside of that one exception, however, I think that these sorts of characters can tend to make it hard to feel seen and appreciated as who you are—instead they can make you feel that people like you aren't 'interesting' or 'beautiful' enough to be worth exploring as a character.
Speaking as someone LGBT+, "Bury Your Gays" is a trope to be wary of. This isn't to say that LGBT+ people in your writing can't have tragic experiences; many people today still struggle with homophobia, transphobia, being assaulted for being LGBT+, etc. However, for an underrepresented community of people in media, it does get tiresome seeing LGBT+ characters constantly written as someone whose life is hell and/or is killed off to where it is a refreshing (and thankful) change of pace whenever the opposite happens.