To grab his attention in the first place, the first thing to think about is dress to impress. you would be good with slightly revealing clothes, nothing to bad. Something like a nice dress to show off your legs, or dressy shorts, & a nice top that shows off a bit, but not to much. And light makeup, quite alot of guys prefer natural beauty, so a small bit of foundation, maybe a little bit of liner and mascara, nude lipstick. keep it light and natural. Then appear confident, start a chat with him, offer to get him a pint or something, maybe even some light flirting, to grab his attention.
Hope this helped :)
It's worked for me, and I've been with my guy for almost a year now :)