Omfg, fortunato? The one that I know? Haha. Nice to see you here.
Anyways, I love the odd choice of colors, feels very hot, like it would be used in a desert.
Anyway, your mountain looks blobby, the top is pretty well, but the sides are one flat color, and stick out maybe a bit too far. (left/right sides)
I would start by defining some shapes on the sides, giving it some detail, light rocks and dark rocks, cracks, holes, etc.