I'm trying to make myself the backgrounds to me new games so I don't get help to, I'm not really good in exteriors, so I need some advice.
Today I found the way to make the cliffs walls, Some parts are better and other worst, but well, I'm working on it.
But I need some advice in how to make the floor (sand, dirt)... I don't actually know a technic to make natural floor. The floor don't need to be regular (as you maybe guess), and as you maybe can see in the in-game sshot, don't need of walk areas neither, cause the game is in first person. I'm not really sure what technic to use... or how to make it sloopy and natural, blendind with the cliffs.... Some ideas?
(PS: The sky is obviusly in work, I will put in when I make another bg that have the horizon covering all the screen)
The BG:

the BG in game: (the left and upper part is too of the interface is too WIP)

thank you for your advices!!
EDIT:
This is how it goes right now, I think practically/nearby finished:
