Las Torres - the towers of Torres del Paine in Patagonia. Alpa TC, Phase One IQ180, 23mm Rodenstock Digaron, 30 seconds @ f5.6
One of the easiest ways to add drama to a photograph is to darken it. Easy enough to say, easy enough to do, but there will be a few little bits and pieces you need to tweak. For instance, you don't necessarily want to darken down the entire photograph, just the overall image. There may be areas you need to keep light and bright, such as the three towers up above.
Technically, it's important to do this darkening in post-production, not in the camera. You may have heard about the 'expose to the right' theory, which states that to maximise image quality, you should push your histogram (your exposure) as far to the right (more exposure) as you can, without clipping the file (over exposing the highlights). This exposure will give you the maximum amount of quality, but it might not look like what you had in mind.