I have learn from the great photographers that if you want your photos to get the result of top pros then there is a golden rule for the landscape photography to shoot only two times a day. To shoot at Dawn and Dusk as it is the only times of the day when you get soft,warm light and soft shadows that give professional quality lighting for the landscape.
i try my best to take photos around these two times of the days whenever I can.I find that the golden rule is a good advice to take on board as it does improve my skill. Try this golden rule for landscape photography and see whether it help or not.