What can I do to dress "prettier" and more put together...?

you can always look more put together when you accessorize. If you wear a plain t shirt, you can dress it up with a printed scarf, bracelets, or even a really nice purse. You can also wear heels to make your outfit dressier. I also recommend wearing your hair down either curly or straight because it will make you look more put together instead of just throwing your hair up in a ponytail or messy bun.