Shock of Shocks! I did better than I thought!
Not that I don't have a "Alpha Tester" now and then, but I too, wound up with a pretty good boy despite my shortcomings. Lots and Lots of praise (and dried liver treats) worked for me. I started puppy school at 4 months and he graduated 1st in the class!!!
To this day I still do the simple sit/stays/down, come (ok this is still a tuffy but on purpose). Good luck! You'll be FINE! RELAX! You sound like you have it all together!