Well, I'm new on Smash Boards, so I don't know if this topic belongs here or not, but I'll try to give you a few pointers.
First off, you should try to become more proficient with the armor pieces. Your enemy can use your own armor against you, so you have to be better at using it than them (learn how to predict when they're going to throw and air dodge to catch, more wave dash combos, etc...). You use the pistol a lot with neutral b, but rarely use her down smash. It may be because you were playing meta knight that you didn't use it (speed of attack versus speed of character), but if timed correctly, it can deal a lot of damage. If you had more non-meta knight battles, that would make it easier to figure out what you need to work on and whatnot as meta knight kinda makes things... tricky at best.
On a side note, is the "Josh" Lucas in the crew Phoenix Alpha?