20F I recently lost my virginity to a 19M and have started being more active sexually, but it's still a bit awkward. Any tips on how we can improve?

My boyfriend (19M) and I (20NB/F) recently lost our virginity to each other, and it was genuinely enjoyable! Initially, I thought everything would be straightforward, but when we started, lining up our bodies was a challenge, and things didn’t always go or stay where we expected. We were surprised by some unexpected sounds and even ended up slipping off the bed— it was actually pretty funny, and we shared a lot of laughs. During foreplay, he’s very enthusiastic about making sure I’m satisfied and is open to suggestions! However, he sometimes gets a bit too eager while going down on me— he can be a little rough, especially when he’s stimulating my clitoris, which can go from pleasurable to overly sensitive very quickly. He’s also been a bit intense when we kiss, but with some guidance, he’s been getting softer during those moments, which is encouraging. On our first encounter, things progressed so rapidly that my immediate reaction was to fake an orgasm to redirect him, which I know sounds bad. I left feeling a little upset that it had to end in that way, and I felt guilty for not expressing my feelings in the moment. So, the next time we were getting intimate, I suggested we show each other how we usually prefer to be touched. I guided him to be gentler with his hands and explained how I like to be touched. When he tried going down on me again, I was nervous about how things might escalate too quickly, so I had to keep guiding his head away. Additionally, since we were in a cold AC room, I found myself drying up from the chill, which made things even more challenging. How can we navigate this without losing the moment? Also, while I think my boyfriend is well-endowed lengthwise, I tend to respond better to girth. Are there particular positions that would highlight his girth more effectively while we’re in motion? We enjoyed the lazy doggy style position when we tried it, as it felt incredibly intense. Furthermore, I’ve found that practicing riding positions on my own is much easier than doing so on a small bed with another person involved. Even though I'm quite flexible, it can be surprising to find the right rhythm and balance. Do you have any tips for building my endurance and stamina for those positions? Any insights into managing the various factors I’ve mentioned would be greatly appreciated. Overall, my boyfriend has expressed some insecurity about his ability to please me, and I find myself torn between not wanting him to feel inadequate as we both learn together and understanding that I need to assert what I need to ensure a positive experience. I don’t want to enable any bad habits that might become harder to address later on. I’m here seeking any advice, suggestions, or guidance you all can provide. Edit: I realize that if I’m asking for advice on communication and the response is simply “communicate,” it kind of feels like we’re going in circles, doesn’t it? LOL.