Good oral skills are as important. If a male wielding a large cock good oral skill are required to make the fucking more pleasurable for the woman. A large cock can be painful and can cause damage if used carelessly. If the male is large some good quality lubricant is always a good idea. Most women have a good deal more capacity than they realize, however if the are apprehensive or even scared because of the males size, vaginal muscles can tense making fucking difficult and/or painful. So if she is concerned about the males' size, put her on top, lube it well and let her have at it. I love watching the facial expressions while they impale themselves on my cock for the first time