The first thing I really noticed was that you did not use Zair
once much. I personally love this move, it is too good. Also, make better use of your bombs--you might want to read up on some of the things you can do with bombs, as well as your other projectiles. Ham was right with the just standing and throwing bombs, if the Diddy was thinking straight he could of just shieldgrabbed you and threw you off the stage, and that would of not ended up good since you were over 100% at that point.
You're pretty good, just keep practicing and read the guide here if you want, there is seriously like a never ending flow of knowledge flowing from that thing.