Girls... and guys i guess? i need help!?!?

i really like this girl but im not sure if she likes me back. im am in grade 9 i have braces and a unibrow which i have to pluck(which hurts like hell) im a nice guy, honest, trustworthy and i dont like to swear. i play trombone (3rd year), used to play french horn (started this year but lost mouthpiece and violin (9th year) i love a good challenge and although ive nvr been on a date i think i am pretty romantic. i have very little acne. how can i confirm that she likes me or try to get her to like me