How do I hold your attention?

Smile. Smile lots. Not like a creepy stare smile, but a cute smile. Do that first. Body language is key. Walk with your head held high, not hunched over, walk tall, but don't strut. If you look like you're at ease with the person you are, it'll be easier for girls to be at ease with you. If you like a girl, a bit of eye contact. Don't stare so they're uncomfortable. But make eye contact, they'll see, do it back. And then you look away. That's basic flirting. Then make her laugh. When she does, she's relaxed with you. Then you can open up your personality. Have fun :) xx