Next we UV Mapped the model, and because this was a sphere to start with it was incredibly simple to do. All we needed to do was take the sphere map from the UV texture editor and open it in photoshop, then add on a pattern to make it seem more like an asteroid. You can see my material on the shape above.

It was the same with the asteroid that started off as a cube, just a lot of playing around with the faces and vertexes, plus extruding faces and inserting edge loops as it takes more to make an asteroid this way. The problem with using a cube to begin with is that it becomes a rather odd shape and never quite looks right, where as with a sphere you have a better shape to start off an asteroid with. 

We also UV mapped this model as well, but because it started out as a cube we had to do it like we did with the spaceship and do each side separately. Also because the edges became obvious we had to blur the edges of the material in photoshop to stop it showing up on the model, it takes a lot to get this correct but I was just playing around with my cube model so its a little bit obvious where the edges are.