Editing in Photoshop CS

I've been printing a number of portraits on canvas lately, and I have great admiration for portrait photographers. It is a lot of work to get the skin tones adjusted, and this is one of those things where years of experience and a good eye are invaluable. Image files are almost always way too red, and canvas printing seems to intensify red and green tones. If the image file is srgb, I leave it as is (vs RGB); keeps the reds muted.