Here are some general tips:
1. Foreplay, get her really excited and horny for an extended period of time beforehand.
2. Listen to the women in her moans or any instruction she tells you, she always knows best.
3. Be consistent - if you keep changing your movements and actions, she will not like it.
4. Strengthen your jaw - if you can only keep the same motion for 5 minutes without stopping, you're not going to get anywhere.
5. Same thing guys like in Blowjobs, some eye contact, enthusiasm and some moaning (at least for me).