Boys boys boys

I need help!

Boys are finally giving me attention and its making me nervous(but not in the bad way)

How do I act confidently and not flustered?

I literally make eye contact for 1 second and look away quickly while shifting to a new position in my seat.

I want to be able to flirt easily and everything, but ah it's so hard without becoming stuttery and everything. I'm literally an attention-virgin and it's embarrassing so I'm anon!