Wow, you **** that ICs so badly that it looks like Sheik > IC. Impressive.
The biggest thing I learned -- or, rather, had emphasized -- there was you never attacked when you had the downside of the attack possibly failing and a grab resulting. This is best shown at 2:53. After you throw the needles, you jump a fair, fast fall a bit, and feint and jump up to the safety of the platform. Most [bad] Sheiks would go down with a fair anyway against the shielding Icies and risk their whole stock on a grab, even though they intellectually know better. That's why you ****.
I fight Fox much more defensively, rarely approaching him with the intent to actually attack. I usually approach to make him do something, and respond to whatever he does. I also don't dsmash nearly as much as you do; where you dsmash to tech chase or to follow up, I usually look to get in grabs that lead to combos. My kills usually come from dash attacks that lead to tilt to fair ****, but obviously your strategy was quite effective, so I'll steal some of it.
Every time I watch your Sheik I'm like ****, my Sheik needs to get up to speed -- literally. You're ****ing fast. You show me how badly Sheik ***** platforms with her disgusting wavelanding to rapid fire aerial attacks, a strategy that has helped me get a lot better recently against Falcos.
Red Sheik ***** silver Sheik though. See the light.