I think most of us have used it to some extent when taking a self pic, for whatever reason. Turn your head a bit so the shadow covers a blemish, take a step to the side of the light so it "defines" your muscle, or even doing something to draw attention away from a black eye, lol.
My Training Log
Personal tips that I've learned along my still short journey:
Leave your ego at the door.
Prepare. Showing up dehydrated, hungry, and tired will guarantee failure.
Be ready to fight for that grinder of a PR.
Listen and learn. Absorb everything you can, and assimilate that knowledge.
Top Gym lifts: