Utilize side-b into hop/fair and dair more and use bair more often since it was buffed last patch. Don't capitalize on your shield break forward smash like a lot of bowser jrs do. Reverse downb and pick up your bomb and throw it.
Neutral b is slow and can be used to gimp out your opponents half charge. Your down tilt and forward tilt can edge guard pretty well.
Also don't be afraid to use upb on stage because that hammer is killer.