Snaping on curveball

When I throw my curve ball and am suppose to snap down, do I physically snap with the wrist on release or do so along with a more violent arm swing? If someone can put in some kind of GIF or video to help demonstrate what I should be doing on the pitch that would be great.

Here is a great video from Phil Rosengren explaining how to throw a 12-6 curveball


How to throw a 12-6 curveball

Forearm pronation snap good

Forearm supination snap bad

Go, Occam’s razor on this!