I love erotic talk in the bedroom. Using talking dirty examples will make it easy for you to do. My 1st piece of advice, if you are timid, is to begin slowly. Whisper erotic sexy things into his ear until you feel like speaking them out loud. Let your man know your wants.
This means their natural instinct is to hold back. Plead with him to use you. We all like compliments. Men especially like them about their cocks. If you want to make him enjoy himself then compliment him. So all you need to do is make it clear how much you enjoy and need - remember that from earlier?