It is good that you and your husband have such a prolific sex life. Enjoy it!
That being said, look at porn for the reality of what it is; it is a strictly-regulated business. Those actors and actresses have tens of thousands of dollars of work put into them to make them as perfectly-appealing as their desired demographic. They are cut, fluffed, dressed and made up to look perfect on-camera. THEY do not even look just like that every day.
Those men and women have SO MUCH sex that many of them become burned out on the act, because it is so strenuous. They are not super-human fuck-machines, they are worked to the bone. (Pun totally intended)
You satisfy your husband, that is the only thing that is important. As for your self-image, even those actors and actresses do not completely enjoy being made up. It takes HOURS of preparation for a shoot. They don't just find a couch, set up a camera, cast two or more people and just roll footage while the super-human bang-bots do their thing.
So relax, you're doing everything just fine. (:
As for bedroom tips and tricks...try googling "bedroom tips and tricks" and go nuts with the results. No matter what you do, never EVER let pressure to perform into your sex practices. Talk openly about your sex life and about what you like, and he will happily tell you what he finds stimulating, and as husband and wife, it is your job to learn everything that turns each other on. ;)
Have fun!