Gorgeous.
My only criticism would be that the roof tiles possess a stylistic angularity which the rest of the image lacks.

Thankyou kind sur (yug yug).

I'm a sucker for 45 degree angles so I kept going on these roof tiles for a while.
Middle to right is most polished though I feel like it looks a little contrived and so I would need to add some "major forms" (to quote Cyangmou).

Do you think the hard edge style of the roof tiles look better than the more organic (still rough) floor tiles?
Because I could either apply this to the ground and cave wall tiles, or archive the roof tiles for some other use.

EDIT: Just to mention I'm working of only one monitor ATM and its rly giving me the sh!@s 

EDIT 2:
Sticking with organic style rocks, I went about it this way instead:


Which losely translates to this:


Probably push forward with this style, modify/repaint the roof shape I had earlier, then add a couple of larger structures protuding from the shadows for variation.

Onto my 4th or 5th iteration of the cave roof tiles.
Now there's a disparity of styles / rock types between layers.


Will probably do a major paint over roof tiles aiming for more emphasis on "greater form".

I'm thinking of a 3 stage process for rock structure:
1) Rough in big and medium chunks
2) Divide and extrude most chunks
3) Selectively divide and extrude chunks from stage 2.

the jar effect is mainly from the edge highlights simply moving up and being filled with shadow underneath.
this creates a vertical plane.
try leaving the highlights around the same place but maybe stretch them upwards to form more of a bulge in the middle.

link to the marne mockup inspiration (please done make us google).
screenshots of it if no good links.

please describe the kind of world u want to create.
imagine ur writing a brief for an artist to paint thie image on a wall for $15k rather than in technical speak.

also, start freehand pixel painting in ur best available graphics program.
toggle the 16px grid off and on as u paint and worry about the tiling later.