Maikng 3D Water Scapes
Step 1 : Create a new document, select a light shade of blue, saturated to 100% for you foreground color.Select white for your background color.Either use a cloud filter to create a cloud texture over the entire image, or fill with your foreground color and paint in the clouds with white using a large soft brush.Step 2: Select Image>Adjustments>curves.
Adjust the curves so the blue becomes darker.The curves option allows you to maintain the hue and saturation of the image while darkening the midtones.