Sextus, first allow me to commend you for starting such a quality thread. It is much appreciated, even if a lot of that appreciation is silent.
I am still quite a newbie to sexual techniques and all, but throughout my long history of internet browsing, i have stumbled upon a similar thread/post in a chinese adult forum, posted by a (very experienced) woman, no less. In the post she described a few techniques as well as some personal opinions on male anatomy and male attitudes in sex. I haven't actually had the chance to try out most of those techniques so please keep that in mind. heres a translatation of some of the techniques she posted:

1. while you are pumping in and out, use your hand to rub her clitoris. Speed up as she nears her climax. After she climaxes you should remove your hand from her clitoris as it might become painful due to over-sensitivity. Keep the thrusting motion in a medium high pace and try to climax after the girl, as the girls vaginal wall becomes more sensitive after climax, meaning your thrusts after that will have more bang for your buck, so to speak :P

2. when doing DATY, do not go straight for the clitoris as most girls will be too sensitive at the start. Instead, slowly move your way up to the clitoris by starting at the inner thighs or labia. When you do work your way up to the clitoris, you can start by licking the left and right side of the clitoris, with a sideways swipe across the clitoris itself (with your tongue). During this part, be careful of where your teeth is!
Another technique for oral is while retaining a bit of saliva in your mouth, cover the clitoris with your lips, and open and close your moist lips(moist with saliva), a bit like a fish. For variety, when using your tongue, instead of using the tip of your tongue, try using the underside of your tongue to do a press down motion and rubbing motion.

Ok i will stop there for now since i need to go out. Translating is a lot harder than i thought.