So for blowjobs, try to incorporate your tongue while you’re bobbing. I’ve noticed from my experience that when your do it the opposite way of your head movement is pretty good, and definitely hit the spot on the underside of the tip that makes that v shape, idk what it’s called but you know what I’m talking about lol. You could even slide your tongue up and down the shaft while just “jerking off” the tip. For being on top, don’t be afraid to touch him. I like to grab their chest, like literally, claws in the skin type grab, when it’s really good. I had a guy friend tell me that he likes when girls kinda move their hips while riding. Imagine like a wave motion, do that while going up and down. A thing I like to do because I have short legs so I can’t go up very high if I’m on my knees, is to grab the head board or put your hands on the wall to help you get up high and be more stabilized. This helps with going faster and getting a good rhythm too. You can even lean forward onto their chest (similar to how they are when on top) and move your hips in a little wave motion in and out like that too. I hope these simple little ideas help! And if you feel uncomfortable being on top, like when I’m feeling self conscious or not in the most enthusiastic mood lol, I’ll play with my clit. It’s like a little kick start into freak mode and it could probably help you get out of your shell a little bit more! Plus, the guys I’ve been with have loved watching me use them for my pleasure, I’m sure yours will too!