first kiss

So I'm 15 and I haven't had a first kiss yet. Although I'm not in a relationship or anything where I will need to know how to kiss urgently I still want to be prepared. So I am wanting to know your best tips for a first kiss. Also I'd like to be prepared for more than a peck on the lips because I'm sure the other person will be experienced and already know how to kiss. Any tips will be greatly appreciated x