Oh I can relate to that. I too did my first a few weeks ago. Scary? Not many. At the hold I kept saying to myself, "Just do what you've done and put into practice what you've learnt." It went as well as I could have hoped; not perfect, but not bad. Shame I left the storm flap open but hey, what's a little extra drag?
My instructor Ben, isn't particularly big, perhaps, erm, stocky, but I have to say, the PA28 was like a jet fighter without him onboard.
When eventually I landed (not soon enough), I was proper emotional. Like wow emotional. In fact, the YouTube clip I posted had to be trimmed at the end as it looked like it was raining - INSIDE the cockpit. Can't be having any of that, I'm proper butch, me.
Good luck with the rest of your training. You've crossed a massive, massive bridge.
I can't post the link to the YouTube video but if you search for first solo Denham 29/3/19 you might find it.