Every woman you sleep with will be different. Their bodies will be different. Their tastes will be different. Their commitment levels to you will be different. So the most important thing you can do when sleeping with women is to pay attention to them. It sounds simple but it's so often overlooked. Rather than powering on through and going with what's worked in the past or just what you like, really engage with your partner. She may be willing to talk you through the process but if not, she'll be giving you all sorts of visual and verbal clues as to what's working and what's not. Listen to them, make note of them and try, all the time, to be the best partner you can be. You'll both be happier for it.