Girls, I dont understand?

so there is this girl in my class I am nervous around to the point where i can't really say much so a few days ago i said hi introduced myself and gave her a drawing i made cause i really love art and did not really get a response and i gave her a couple more drawings since not of her but just random things i like drawing and recently it feels like she started trying to ignore me by running off before i come out of class or just not looking at me or talking to me when she accepts them is she just rude or am i missing something i might have done that offended her?

Updates
24 d
hi so thanks guys for awnsering my first question and my followup question is what do i do if this girl scares me for some reason i mean i dont like her as anything more than a friend but every time i see her i seem to say something i dont remember and then run off like a fool and i dont get it because i have never done this before and talk to girls all the time as most of my freinds are girls due to past issues with boys
Girls, I dont understand?
Post Opinion