One of Shiek's most powerful combos is down throw -> forward air
Mew2King tech chasing a Fox with grabs and down throw + dash attack.
Mew2King demonstrating an insane Sheik combo on EG | PPMD at EVO2k14
Laudandus demonstrating how to relentlessly edgeguard as Sheik
from SmashLounge Invitational #1
Sheik angles her up-B against the wall to delay her fall (but lose continuous intangibility)
Sheik angles her up-B against the wall, making her land earlier than without the wall collision
Sheik's different dash dance lengths