And how many times have I kicked myself for not following simple advice like this , have camera will travel so take it with you whenever you can you never know what you may come up with .
I personaly like photo 1 as you have tried to fill your frame without a discernable subject .
Landscapes are not easy they can look flat and disorientated , look in magazines and nature books for ideas , try a few shots from the same place at different times of day ( sunrise - sunset - heat haze etc ) try different filters for impact , try exposure bracketing , dont worry if you dont get perfect results right away just keep trying different things with your camera settings .
Ive been trying for 30 years and havent given up yet