This image submitted by Thierry Cornet is a product of way too much Photoshop. I can see the photographer tried to add drama but it's overkill. The clouds are unrealistic. A better way to get a more dynamic look is to use a polarizing filer when shooting. This will add natural looking details to the clouds. Also, there is too much saturation. It's all right to kick up the colors a notch or two, but this went too far. I would also suggest cropping out either part of the top or bottom to move the horizon line out of the center of the photograph.