Cannon Strike cross-up mix-up-
After a close crouching Roundhouse, an anti-air Roundhouse Cannon Spike, or a (close) Roundhouse Spiral Arrow->
Option A: Whiffed Forward Cannon Strike-> crouching Short-> crouching Jab-> Roundhouse Cannon Spike
Option B: Whiffed Short Cannon Strike-> crouching Short-> crouching Jab-> Roundhouse Cannon Spike
Option C: Whiffed Forward or Short Cannon Strike-> kick throw
Option A has Cammy landing on the other side of the opponent, forcing them to change their blocking direction. In other words, it crosses up. This Cannon Strike is particularly difficult to judge whether it will cross up or not by both the opponent and the Cammy player!
Option B does not cross up, but instead places Cammy in front of her opponent, where, were they to anticipate a cross-up and attempt to block, they would be blocking incorrectly; you might even be able to use a VC in this situation.
Option C completely counters the enemy's blocking dilemma.