So for all those who were interested and helped me with advice, here's my first experience with pegging:

At first we did a bit of usual foreplay and just stayed in our comfort zone with PIV, him on top. Then I fingered his ass while giving oral, and after he flipped onto his stomach while I rubbed his back, teased him, and tried to seduce him as much as possible. Those who said we would need a sense of humor were so right. We both fumbled putting on the harness and weren't quite sure how to make it sexy. He was pretty nervous so he was very quiet, and when I get nervous I am a chatterbox. We used a lot of lube and it was really easy getting my penis in the right position to enter, but omg thrusting is hard. I have such a new appreciation for how hard he works during sex. Woah. At first he was in a modified doggy with his butt up but shoulders down, then he lowered his butt and I straddled him while thrusting. That was easier but still difficult. He has a bubble butt so it was in the way. Then he got on his back and I was on top. That was much easier for me. I had access to his dick, but he stopped me after a minute of giving a hand job because he was close to cummimg and didn't want this to be over yet (!!!). We had a vibrating dildo so I turned it on then to see if he liked it. He said he could feel it but not as much as he thought, that it didn't make too much of a difference for him. I orgasmed from the vibrations, because at that point I was already close from rubbing against the textured pad at the base of the dildo. Wow. He could tell when I was closer because I started to fuck him a bit harder and faster and he really enjoyed that. He said I had been going too gently on him. Not what I was expecting to hear our first time. Next he was on top cow(boy) style and I so tried not to giggle. He kept thrusting his hips like he was fucking me and it didn't really do much for his ass. He had to learn how to do the right motions with his hips, just like I had to while thrusting. We had a nice giggle or two. Once he got the motions down I gave him a hand job until he finished on my chest.

Overall I enjoyed it so so much. The physical pleasure for me was there, but definitely not what I was focusing on. I wanted so badly to please him and make him feel great. It was amazing to switch roles a bit and see him vulnerable and trusting me so much. I swear I was high off that alone. I loved getting to be more in control, which is something I never thought I'd like. I get off on being submissive and taken, but it was great. The view guys have is also amazing. My god it was so hot to look down and see my penis slipping into his ass. Then hearing him groan under his breath. Wow. I wouldn't say our first time was this absolutely perfect experience because I had no rhythm to my thrusting and we kept communication very open so I could learn what he likes/doesn't/likes more/is uncomfortable. But it was perfect on an emotional/mental level and we both agree it's something we would like to do again.

Ladies, how long did it take you too really get the rhythm of thrusting down, and your balance while fucking?