text: It's not the size of the ship but the motion of the ocean...I know corny but size isn't everything.  I have had partners that were small but were amazing in bed.  If sex is just about penetration to you then you need more practice.  Pleasing your girl is more about the foreplay than just sticking it in.  You should concetrate more on touching her with your hands and lips first.  Explore her with your hands and fingers before you go for it.  If you still feel like she isn't being pleased, ask.  If you are having sex, you should be able to talk about it with her.  Ask her what she likes.