Murse-Man

I haven't had this problem yet, but I have no tattoos and look pretty unassuming. I'm also only 5'8" and 170, though. I love to box, though, so I try to be careful both about letting it be known that I'm into that sort of thing and minimizing visible facial abuse. I have some scar tissue around my eye sockets and my nose is bent, but it's not too noticeable. I usually have dark circles under my eyes all the time, so black eyes have to be pretty extreme to stick out too bad. Something I've found enormously helpful is being extremely polite. I've got a lot of experience waiting tables, and over time (in an effort to bleed every last cent I can from my customers) I've developed the ability to make people feel like their needs are incredibly important to me. This works well with patients (they are more cooperative and pleasant if you make sure they feel important) and with your instructors; you don't need to brown-nose them (being polite is totally separate, being a yes-man is incredibly rude imo), but if you are excruciatingly polite to them (even if they are worthless ******* out to get you) it almost always helps. With practice, you can be extra-polite even while disagreeing. It's important to give them the impression you listen and carefully consider all of the advice they give you, even if it's trash. If they just don't like you, they may get reinforcement out of giving you a hard time (if you visibly show that it bothers you to be singled out), so if you react positively to their criticisms they may not tend to give them as much. They'll love you as soon as they need to move a heavy patient, anyways.