nice location. however you chose a not very interesting time of the day. the best time for landscape photo like this would be morning or evening. composition wise, the general rule for wideangle shots is to have a foreground, middle ground and back ground. you have the latter two but no foreground to enter the pic and lead the way. also, try to divide the frame into roughly three parts, allocating the area to each part depending upon what you wish to emphasize in the picture.
last but not least, dont hesitate in using a zoom for landscapes.
hope it was constructive.
thanks.