Im hitting the sac soon so Ill try to be more specific tomorrow, but I was trying to go through some simple tutorials. i.e., teeth whitening, eye enhancement, etc. So I open up a new layer right? Then I try to select a certain area, lets say the teeth. Then when I go to hue/sat, it keeps telling me "could not complete (Hue/Saturation for example) because the selected is empty" What am I doing wrong?