There are a lot of ways to please your man. I have been in a relationship for 12 yrs. And we still have an awesome sex life. I just got this guide. I found it useful. Simply put to keep a happy relationship going, you have to have a healthy sex life too.
There are actually exercises and stuff.
I would go with slow long licks up and down his dick, and then taking him down your throat. Try doing it all slow, all guys love the "slow blow" Just see what his reactions are. You should be able to see if your doing right or not.