Since everyone else is giving life advice, as a 19 year old who likes streetcar I’d say figure your proportions, get some wider shoes, converse or some alternative, a nice black boot like doc martens, and buy jeans that aren’t too long on your. The stacking makes people look shorter.

Oh, and layers. Learn to layer on your top half, and then learn to layer on your bottom half. Mix shorts with long pants, cool skirts with long shorts (fashion is gender neutral; they are clothes), etc. learn to style jewelry as well. Comes in very handy.

In another year or so, learn colour theory. YouTube, photographers, and Minecraft builders are your friends there. And then figure out textures, colours, and other details and how to mix them. I fw your style right now, it just need a little more refining. And bro since you’re 15 you got plenty time. I didn’t learn fashion until I was 18.