There are times when you want to make large scale (global) changes to your painting.  Things like overall contrast or color tint.  Adjustment layers provide a fantastic solution for this type of challenge - and make traditional painters extremely jealous. If you're not familiar with the 'masking' I talk about in the video, here are three videos to clarify the subject: Masking 101 pt 1,  Masking 101 pt 2, and Masking 101 pt 3

AuthorMatt Kohr