I'll critique when I get home from lectures at uni.
EDIT: I watched the match you posted.... but it was a pretty good match, I couldnt really see any glaring mistakes or whatever... so I took the liberty of watching the other matches from the set... you have some major work to be done in timing and landing your farts... I think you only killed with like 2 of them out of 4 that connected, and you whiffed only 1 or 2. that tallies up to 7 farts actually used, in 4 matches which gives a potential total of 16 - 24 farts.
There were countless times when you let out a fart too early and you either tripped them or just used the little pooter which does f*ck-all.
also, you need to work on your punishment game, some times in those matches MK would whiff a shuttle loop high up, and you'd be on the ground, and MK would be in special fall, free for you to punish and you just didnt do anything. that happened twice in the first MK match alone. other times, particularly VS Snake, you didnt punish his nair landing lag and once you watched him whiff a dair and then got bair'd before you could punish.
in general I would say you have pretty good basics, good DI quite a few times, some good shieldgrabs, but on the whole you need to work on enhancing your game with bait/punish,etc. Sometimes there would be tires on the stage and you would just ignore them instead of picking them up to attack with.
also, bite is not a particularly good move VS MK or any other character with a sword. if you go for a bite and you miss, you're just gonna get dsmashed or fsmashed so theres no point holding it and hoping they fall into it. Wario can only bite MK out of his grab and trade hits with dash attack or nair. everything else beats it.
you might also wanna use usmash less... it only does 13%, doesnt come out very fast, doesnt kill reliably, has pretty horrible range and is ridiculously easy for opponents to SDI out of it. Its only really good for DACUS, which makes it decent at best imo.
and dont use UpB in unsafe conditions considering how heavily it can be punished.