What you have to do is just make an intention to find some female friends. Then on top of that make the decision that you will never get physical with these female friends. It's just a decision, but an important one. If you have it in the back of your mind that you want to get with them, in my experience the friendship isn't going to be a true friendship. Just be clear in who you are and what you are about.
Then go out, meet these women, exchange numbers or whatever. Then build up a list. Now when you go to these parties, just say hey we're having a party at such and such and your invited!
OK, now when you interact with them, talk to them the say way you talk to guys. Also remember your intention of only being friends with them, this is important so that you don't confuse them with what's going on. The more relaxed you are about your goal and the more honest you are with what's going on, the easier it's going to be.
Women are people too, everyone wants more friends, everyone is bored and needs something to do. So this is going to be super easy.
Also you could make an affirmation on it. "I have an army of super hot female friends that love to go to parties with me!" Accept that as true and as if you are already that type of person and the faster it will happen. Also if you notice any restistance to accepting this as who you are, you'll need to let that go, as in release on any resistance so that you can fully accept that this is who you are right now. BE it

The sooner you decide to be it instead of trying to become it, the faster you'll reach the goal. Good luck and remember if you believe it's easy, then it will be easy