So there is this girl that I like, she's currently on holidays in my country, but I knew her from overseas.
I like her and I think she might like me as well.
Last week she and a bunch of her friends stayed over at my place. The main reason I didn't try anything was that not only were there four other people around us at all times, but I don't want it to become weird if it doesn't work.
All I did really was neg her a bit and touch her frequently (not sexual though).
Now I've got a birthday party coming up on Saturday. It's going to be fairly small only 15-20 people including this girl.
Do you guys have any suggestions how to seal the deal with her without making it all weird to be around her if it fails?

Obviously I'm quite new to this stuff, but quite intrigued by it.

Why should it be weird? Act natural, state your intentions in a natural pace while you escalate.

I'm not really worried about rejection (maybe a tiny bit), but mainly that if I hit on her and it doesn't go to plan that she won't want to be around me anymore.

Why do you think she won't be around anymore?

Most of my female friends have been unsuccessful pickups.

So you're saying that if it fails it won't really be an issue? I've never tried to pick up a girl that I still wanted to be around regardless.

If that's true then I have nothing to lose and everything to gain.
Cheers.