GIMP. The 3D things are just a trick with gradients.

I should try that out sometime.

Easy. First, make a cube:



Use the lasso tool, select each side.

Fill with gradients in a way that make it look like a real cube. Make sure its all in Black And White (Shades of gray too).

Build what you want with them, then select the Black (Grey) and White structure.

Use colorize under the Colors tab at the top of Gimp to make the structure any color you want.

Wool-ah! Colored brick structure.

Trying that. ty.
S=But how do you make the cube so well?

Eyeball it. Lol.

New piece, Cactus:

very nice Shading tub ^.^
though you kinda have the shadow of the cactus wrong.
Use this as guide: http://kakibassiclasses.com/contents/en-us/shading.jpg
sand and sky look pretty nice.

Finally finished:

Woah! Cool set you got there, It would probably get sold for about 30k-50k.

Not sure if thats 3d.

Technically nothin on a computer is 3d :v.
But as how normal people would describe it, that is 3d

Sweet set man, I reckon it would look better with a head similiar to the one you use on your current set.
Just my oppinion.