Man. My penis before starting PE was very, very, very average, Yet I still got word of mouth sex. So yea, You don't have to have a huge dick to please most women (there are size queens.) even then. If you excel at other aspects of sexual encounters the size of your penis for the most part isn't overly important.
The key is knowing your body and therefor knowing a women's body. I'll tell you knowing were the sensitive spots on a female body are (a lot of the same spot you would find sensitive) goes along way. Using "both" your hands in a manner that makes her feel like there are more then one person.
Tits, ass, pussy ugh! There's more to a women's body then these parts. Learn them and you can blow the mind of any women your with. A properly explored body is ready to explode by the time sex happens.
Don't watch porn to figure out how to give oral. Their doing it for show. These guys look like dogs eating at a rotten corpse. This is not how your properly give oral to a women. Frankly I'm not going to bother telling you how to do this, Oral is a talent figure it out. Remember also your us your tongue on more then just nipples and clit. Let you tongue be lite, You don't have to soak her with it, lightly and slowly pass it over her.
I have gotten more then one facebook request from ex's that would later mention how much they missed my hands and tongue. Personally that amazed the hell out of me. I knew I was skilled at it, I just assumed like most of us that in order to have a female really set off by a guy he needs a big dick. Not true.
The point of all this is, A big dick is a hell of a lot more common then a man that really knows how to work a womens body from what I understand. A person using pron to learn about sex would be like a cop using 1980's action movies to learn about law enforcement, it looks good on the big screen but doesn't work for crap when applied to the real world.