Looks good. That’s pretty much how I learned things in the days before computers. As a kid the only summer entertainment was sitting on a dirt pile and watching a crew build a house. The day of the pour there would be 10 kids gawking. The pros make it look easy and as you can attest it’s not.
Like Chris said and I’ll even up his percentage and say 98% of the country wouldn’t attempt doing what you did as a DIY. You get an “A” for effort.