His 3 point percentage has gone from 29% to 35.5% while increasing his attempts by two shots a game (6 attempts). His overall shooting percentage has also increased from 40.4% to 46.3% while also increasing his FGA's by two shots a game. While it's only been like 5 or 6 games, it does show a pretty dramatic increase over one year. Just from watching him play a couple times, you can tell he's a lot more confident with his shot and his form is pretty solid.
Oh and just for reference, Smart's TS% is higher than Burke's was his final year. Again, this is only through a couple games, but so far, his shot has been on point.