I've only played at about 4 gigs so far
First one I started off with a partner which was lucky because there was around 200 people dancing at the time
Worried as anything, but everyone loved it and I got very into it
Afterwards heaps of people told me it was by far the best set of the night
Since then it's felt normal for me as I gained confidence from having a luckily, very good experience
Also alcohol helps (As long as you can drink at the venue or are of legal age) but just make sure you dont drink too much or you won't sound good but you'll be thinking you're gods gift to music