For the guys: you have a long one there are basically two ways to do it:
1) The first is to not go all the way in, but to use the length you have on the outside as better leverage to “stroke around” and touch her all around in different spots inside. Think of those big Slushie drinks where they give you a straw that’s only a big longer than the ******* - it’s hard to move the straw. But if you have a much longer straw, it’s easier and you have more control. Women don’t just want to be pounded in-out, they love having the other areas inside them stroked, so you use this extra length to be able to do it with more control and finesse.
2) The other way is to let her be on top, so she can sink down onto you at her own pace. First she will take some of you, then she will relax (or cum) and take some more of you. Eventually she will stretch out all the way and sink ALLL the way down - trust me, women want to take you all the way in, so just be patient and let her work it all the way in on her own.