The thing I focus on just before the snap is the inside half...

The thing I focus on just before the snap is the inside half of the guy across from me. Coaches call it having 'big eyes.' You keep those big eyes focused on his inside number, the number that's right across from you, because that's the part of him that tells you where he's going to go. Whether he's going to make a move outside or try to bull-rush you.