I watched the first two matches. In the first one, you stayed in shield way too long. He wouldn't be anywhere near you, but you'd still be in your shield. Against Fox in particular, establishing a threatening wall of priority is very important. You must always be mobile when you aren't being attacked.
As for Falco, I think you are far too grounded in this MU. You let him control your movement with lasers. Peach kinda needs to utilize float against him, to make him alter his lasers and reconsider his spacing.
Sorry it's short, but I'm sort of in a rush. You tech chase really well, and overall, you've a really individual and good style (plus, you use white dress Peach). Good work.