Adding Textures

A few weeks ago, we were introduced to UV mapping, textures and bump mapping. Applying textures was a fun process to through as it other programs such as photoshop could be used. I decided on texturing a cube to make it look like one from Minecraft.
I didn't realise that it could be as simple as taking the cube's UV map out if Maya and into photoshop and applying and adjusting the texture to it. However, I think with more complex geometry, adjusting the texture would be difficult.

Here is the cube's UV map with the texture applied - 

And here is the minecraft cube I made -