Don't worry about it mate, like everyone says the first step is the hardest, especially if your alone. You wanna know what got me out of AA, in a club I approached three women or maybe more telling them a really cheesy pick up line. Something to laugh to -I had a big smile on my face while i was saying it- like "here's 10p (10 cents), ring your dad and tell him you wont be coming home tonight"

. And of course we both laughed, why did it help me? because it was so silly and stupid that it already made me lose the girl. If that makes sense. Then to my surprise some women actually responded, laughed and talked with me. I felt comfortable! In fact I somehow pulled using that approach with hb 7.
Overall, find out what works for you, maybe go shopping and ask for advice. Maybe get a job handing out leaflets? Maybe, crack a joke to three strangers for a week? Who knows, be creative, everyman can do this!