Can you give me advice on my first kiss?

How do I kiss him?? He said to just hug him and lean in for the kiss considering we can't get alone long enough we have to do it in front of some people. Were in karate together and i see him 2 times a week. How should I pucker?? what should i do?!! He will be outside with his sister, cousin and best friend and im gonna kiss him there. So can u give me tips? Thanks just looking for tips and u get points for answering anyway :D .