This is simple yet pretty great for a first submission.There seemed to be no big issues here from the shading to the anatomy(all of which are well done),only the character's hair could use a bit more details(try drawing strands of hair flowing in front of the character's face) and reshaping(it doesn't seem to fit the shape of the character's head,try making it curvier at the top and the sides.)Anyway,good work on this and keep it up and keep practicing because one day,you'll get a place in the art portal for sure!