By the sounds of it you've done brilliantly already. It's hard as fuck going from being shy to opening random strangers, so well done for manning up and cracking on. There's a lot to be admired in a bloke who pushes his comfort zones to grow, learn and go after what he wants. Don't beat yourself up for other peoples' reactions - some people are just wierd.

As for opening, don't change a thing - keep trying and sooner or later good things will start to happen. It only takes one person to be a bit quirky and have a chat with you and you'll forget all the people who blew you off and feel absolutely amazing.