Very nice, enjoy!
To our other posting members, You certainly could build your own reliable and correctly functioning AR-15, unless perhaps you wanted a match target gun. And you could learn to make one of those too, with a little studying. A chimp could almost be taught to build an AR-15.
I've built 6 or 7 of them and I'm no gunsmith. I used the Marine Corps armorer's manual, not a fancy $50 book from some shlub who wants to see his name as a published author. None of mine have ever had a misfire, jam, or malfunction and they've all been fired many many times.
All you need a decent assembly manual, and a few dedicated tools you can't do without - plastic lower and upper receiver vise blocks, a traditional steel or dense plastic gunsmith's bench block, some spring pin holders and spring pin punches, a barrel nut wrench, and possibly a torque wrench if you don't trust yourself to tighten the barrel nut to approx. 19-22 ft. lbs.
I think you should make another one