Photo retouching Jedi Master Amy Dresser pulls back the Photoshop curtain to reveal her working process in this webinar with PhotoShelter. Amy has worked for a host of A-List clients from photographer Jill Greenberg to Playboy to Barbie. Listen as Amy humbly claims her work is relatively simple: remove what might be distracting, then pull the channels up and down to see if things will look more interesting with a different color direction.