I think we've discussed the matchup against the Zelda boards. ALmost like a dead 50.
Anyways, you can potnentially outcamp Zelda if your smart and patient. Learn how to PS, it's not hard to PS her stuff anyways. If your lazy, SH nair (make sure her din isnt big), then retreat with a fireball to punish ending lag.
Never approach dead on with SHs against Zelda. Espically a DAir to nair. it doesnt work on zelda because of her OOS upsmash. Instead learn how to mix it up with SH aerials to airdodges buffers when you conditioned them with SH double aerials. Trust me it works, its matter of out thinking your oppenent. ]
If you go with a steady slow (slow I mean by a SH, then maybe secs after) throw a Dair, just at least a lil bit off her range, then buffer it to a Dsmash. You can get inside like that. I've had about moderate experiene against zelda, its abit troublesome, but once you get her in the air and juggle trap her you'll be fine.
TL:DR
SHNairs to fireball to force a approach.
SH airdodge
PS
SH any aerial (preferably DAir) buffered into any ground move (prerferably dsmash)