Let the guy sit near the headboard, cross-legged, while you sit comfortably on his lap, facing you. Eye contact plays a key role here, because in the process you will have to communicate only through glances and sounds. Whisper in his ear what you want him to do, then give him a gentle, unhurried, deep kiss and look into his eyes again. Don't forget to show your pleasure by moaning - it turns men on incredibly.