Thank you.

Nice piece, its very satured but its nice.

I see, thats because I put the backlayer trees with a darker color than the front ones, but isn't taking sence. 
Thanks.
 

I think this could benefit from some color variation between the greens on the different layers. Too much of that same green taking up most of the picture, and it's hard to determine the depth of the layers.

Hehehe, because I re-drawed the floor tiles, sorry.
I added a new shade before uploading this piece.
Thanks for replying.

You have some places on the slopes that aren't tiling.