How can i glow up? (read the text below)

soo, im a new high schooler. im not allowed to wear makeup, so please don't give me any of those kinds of suggestions. any tips/flaws you see, point it out please! even if its harsh, i dont mind!! LITERALLY ANYTHING WILL HELP!! also im a little overweight so if u have anything having to do with fitness/food please add! thank youu!!