Techincally there is little wrong with the images - Just watch your depth of field when doing landscape images as generally you would want the focal point to be the sharpest (In some of your images, the focal point is the background but the foreground is sharpest). Depth of field is generally determined by your 'f-stop', if you're using a lower f-stop such as 2.8 or 5/6, your depth of field is very limited. For photographs such as this I would suggest an aperture size of at least f11. My suggestion would be to try taking some a different time of day, such as dusk or dawn, or during a weather event. This will make your images more dynamic and interesting rather then appearing flat due to the harsh sun.