I have a chemistry lab with this girl in college and for the past few classes I've been trying to work my charm. I try to stay relaxed, make eye contact and speak slow. I'm also pretty tall and fairly muscular and as douchey as it sounds i find myself flexing around her lol. She smiles at me a lot and looks at me a lot.

Theres two other people in my group, a guy who is clueless and doesnt really do anything and a girl who tries to do everything by herself.

At the end of class we were walking out and chit chatting about how dumb our professor was or whatever and she said "I'm really glad you're in my lab ground" and smiled and walked off. I thought this was a great sign. Next week what should my plan be? I dont think I'm ready to officially ask her out yet but what sort of advances should I make?