
The image that came straight out of your camera is probably not good enough to be sold
Since the advent of photography, photographers have toiled over their images after the image was taken. In the film days, this meant hours in the darkroom. Today, it means Photoshop. That doesn’t mean you need to manipulate the image beyond the point of recognizability (in fact, that’s usually a sign of a bad photographer), but it does mean you need to understand about the basics of contrast, curves and levels.
Take time to retouch skin blemishes, fix fabric wrinkles, and remove the stray twig or gum wrapper. Advertising agencies will pay more for these images, not only because they’ll save retouching money, but because they just look better in the first place. Image sales are all about perception. If the image is perceived as being professional, the price will be received as being reasonable.