Admittedly, I was a bit rusty at the time of this video; TP5's the only big tournament I've been to since February this year due to IRL stuff; but I want to point out something for you.
Look at the other Peaches you beat. For example, the match vs jmo. Now you can probably attribute it to my rustyness, but jmo played a lot fancier than me. He did a lot of fancy tricks, better combos, smoother spacing. Looking at the video, my motion was a bit erratic, I wasted my float accidentally a few times, fastfell an airdodge offstage which almost cost me, etc. I was sloppy.
Despite that, I won pretty handily, while you consistently beat every other Peach at that table.
Why's that?
I watched and waited. I didn't try to force openings like jmo was doing, but watched your bananas and reacted to how you were trying to get them, and reacted to you instead of forcing you to react to me like the other Peaches were doing. When I got to kill percents, in every situation, I simply thought: "which guessing game could potentially result in a kill move being delivered on his part?" and made decisions that avoided it. I took a lot of extra hits and grabs as a result, but lived to close to 200%, because I avoided those situations instead of going for good hits.
There's your lesson for the day
Don't play for speed, watch your opponent, think your situations through, and be patient. Thoughtfulness trumps tech.
As David Sirlin said in his book; the most important trait a player requires is appraisal (knowing the most effective decision to make in a complex situation; this is how I lived to high percentages), and the second is Yomi (the ability to read an opponent, which is how I landed my hits on you). Technical skill is further down the list, though still an important attribute. Focus on building those skills.