With respects: You have a very nice foggy sunset - lonely tree feeling here. Thus in a workshop I simply enhanced, brightened, and sharpened it slightly so the sunset and tree are bit more crisp. I also added a simple border to help enhance the look of this nice scene. I used IrFan View which is a free photo editor downloadable online.
(http://www.irfanview.com/). This software will allow "canvassing" or added borders for your photos. If this workshop is helpful in anyway please check the box that it is - thanks - David Thomas (Welcome to TrekEarth)