I'm a good looking guy, don't dress like shit, hygiene and facial shit taken care of. Not built, but not obese either.

When I go cold approaching at the mall, I start off scared as shit and completely out of state. Once I get that first approach in I'm in state and don't give a fuck what I say (no social consequences).

I get a lot of stares by cute chicks in the hallways, sometimes from girls that sit nearby my group of friends during lunch. Now I'm not in state or anything + I give a lot of fucks (social consequences).

How could I go about approaching? How would I start off the approach, does approaching instantly let her know I'm interested or would I have to start off with an attraction line ex:"I thought you were cute and I'd regret it if I didn't talk to you"?