Whoa, what's with the criticism. I thought the op is advertising his 3D printing service and showing off an example from an artist who bought and paid for the service.
Nice little Mech dude :) , I think it would be cool (just my own opinion) to make it with some kind of purpose, for example, a Medical Unit or something.
You can use the Multi-switch node from the library. That will allow you to switch between colors you plug as inputs and feed that color into a mask for example.
Instead of rotating object you could rotate gizmo. For example in 3ds max when cylindrical projection selected you manipulate gizmo like a usual object:
That's a really good example, specifically because it has also been worn down and rounded out by the constant pounding of the ocean, and yet it even remains angular and jagged.
Here is a better example. I overlayed the images on the normal map to show that dDo is using the edge padding not the actual edges. One of the maps used for the overlay is the MATID.
Follow what works, for example I always liked IGN's review format, with a score for each aspect (presentation, sound, lasting appeal etc.) at then end of the review.