Firstly : yes i fucked up the title , just realised ''advice'' not advices :P

Hello everyone ! I'm an 18 year old male , i would consider my self above average-looking . I recently broke up with my girlfriend and decided to start having fun with girls instead of having a serious relationship . So there's a girl in my class [18] that i like and she is absolutely stunning . She already has told me i'm really sweet and cute , but i don't want to look like one of those desperate guys who are constantly chasing her and compliment her all the time . How do i tell her that i like her without sounding desperate ? Should i compliment her ? I figured that since she hears compliments from people all the time it would mean nothing to her . Basically i'm trying to show her i'm different than those guys and not desperate at all . My previous girlfriend wasn't that good looking (she was average) so now i'm kind of nervous since many guys flirt with the girl i now like everyday , and many of them are 20 years old or more , so i feel like an underdog here , in lack of a better word , any advice would mean a lot to me !

tl;dr i'm flirting with a very beautiful girl who gets chased by many guys everyday , any advice that would prevent me from looking desperate ? thanks in advance