Very nice start here! I like the mountain/wall texture.
Question: Is the grid meant to represent a tiled floor or a battlegrid for a D&D-like game? I wasn't sure -- either way, it looks nice.
The water looks quite good. I particularly like the water in the rectangular region -- the textures there look a little bit like clouds, but do a nice job of conveying a sense of ripply water.
I assume the bright orb is some objectof worship?
Awesome job! Keep it up!