..stuck a mix of those bits him using loads of glue, tape and sticky pads. Next slapped some paper machie over the whole lot. Then painted it all using household sample paint pots. After the main coat had dried it was given a series of assorted washes and dry brushing with the some of the wound texture colouring and scuffing being made with nothing more fancy than a washing up sponge. Edited to add, you can achieve a similar effect when texturing in 3d if you give the paintbrush a coarse texture in some paint packages.

Pinky - you left the lens cap of your mind on again.