This video will teach you how to add drame to the sky on your photo. Actually you will make the sky look more intense. First you need to select the sky with a Quick selection tool. Then change the blend mode to Multiply. You increase the contrast using the Curves and add some vignetting.

This video shows how to make a selection in Photoshop, using the Quick Selection Tool. It is a semi automatic way to make a selection and it does a better job of finding edges of your selection than the Magic Wand Tool. Once you selected some part of your image, you can apply an Ajustment [...]