Wow! Looks amazing! Just some tips for you ;)
I don't know if it's Jungle Wood, but that green wood, some people, like myself, like to use Jungle wood in our builds. It gives a colour full taste in a house when mixing with birch planks. Try to make it look more natural wood looking than usual.
The Sand, I'm a bit worried about it, the colours are a bit too dark, but just tone down the value or saturation level a bit.

but then other than those two. Everything looks great!

Looks Nice

Pretty cool but I suggest trying to get the sand to tile

Wow very cool!
Although I'd suggest using a larger palette.

I like the dirt and stone textures, but the grass, side and top, is just too plain, and just doesn't convey a grassy feel.  If you're using a custom palette I would recommend adding a shade between the light and dark colors used in the grass and maybe adding more noise or something with it.

I like it all apart from the top of the grass. 
So, all in all nice pack :D

The dessert looks good.
Personally I have never seen a blue tree...
The top of the grass looks a bit flat, not much play in it.

ah well good luck with it.

Let us all behold a texture god!