First time was predictably not very smooth, advice?

I know, not a particularly unique experience. I (mid 20s M) lost my virginity last night with a friend (early 30s F). She’s more experienced than me (easily achieved!) but hasn’t slept with anyone in quite a while. A few random things that happened went well, except the rest wasn’t very great.

The good:

- She was able to cum (at least, she said she did and was shaking for a bit!) surprisingly easily from oral, considering that I don’t know what the fuck I’m doing. Didn’t even end up fingering her at all, which leads to the next surprise…

- We really didn’t have any issues fitting me inside (~7.75”x~6”). I was prepared for all sorts of problems based on lurking around here, and we didn’t even have any lube on hand… just lucky I guess?

The less good:

- I wasn’t able to cum at all. I had masturbated in the late afternoon (didn’t expect this to happen and certainly not when it did) which almost certainly contributed, plus first time nerves. I felt like I wasn’t even really feeling much of any sensation when I was inside. Hopefully better when we try again?

- Positions were kinda difficult? Her on top went well, missionary ok (I’m not that good at thrusting somehow, and also had slight issues finding my way back in when I popped out and was slightly soft), doggy failed miserably. Couldn’t figure out where to put my legs, hers, couldn’t get lined up, etc etc. I think maybe the lighting needs to be up just a bit more for next time…

- I guess the only real BDP part of this: probably surprising no one here, receiving head didn’t go super well and hurt a moderate amount. I think it may have been some teeth getting in on it? Was hard to tell. We were both up front about being willing/able to take feedback, but in the moment I felt bad saying that it wasn’t working quite right (and she was already apologizing after feeling out of practice, so I didn’t want to pile on to that). What’s a good solution here? Acquire lube (obviously) and do more of a handjob situation with licking instead of trying to fully fit in her mouth?

Any advice or thoughts on the good, or more importantly, the bad, would be appreciated! Cheers.