I have Dj’d for last 15 years, played across europe and i am now semi retired from it all.
Best advice is too play to the dance floor and not to yourself, some nice early doors grooves, nothing peak time build up the music slowly, observe the clients and see what they react too. Main thing is to enjoy yourself and relax, a beer or two before does take edge off things. Just dont get smashed. Let us know how you got on! Good Luck!