Conventional stud framing "should" incorporate the use of PT plates. On the bottom, I double plated with pressure treated just to be sure. Some local codes call for it to be used. Couldn't really tell if the OP did or not.
Agree with the other posters who mentioned being "style" aware. Some local codes will call for that as well, down to matching siding/roofing with the house. In our area, we have more than few "pole barns" that are not pole barns at all, but framed buildings, complete with vinyl siding to match the house. Look darn nice. DiamondPilot who posts here on TBN, I believe, is an example.
As is my own 24x20 shop and my 20x24 mini-barn, with loft.
Congrats to the OP on an exceptionally nice shop building.