Jonathan subtly converted each of the Terminators using Forge World shoulder pads, bare heads, purity seals and tabards and even a few etched brass icons. One Terminator in particular - the fallen warrior in the bottom left corner of the diorama - had to be carefully cut up and re-posed to make it look as though he had fallen to a Genestealer attack and was trying to staunch the flow of blood from his wound.
When it came to painting the Terminators, Jonathan airbrushed the blue on to them using darker blues for the lower halves of their armour and lighter blues at the top to represent natural shadows and an overhead light source. He used a similar technique on the Genestealers, with those crawling down the wall appearing lighter than those sprawled across the floor.
To give the impression of an oily, rust-encrusted space hulk, Jonathan used lots of weathering powders and oil paints to add dirt and grime to both his Terminators and the scenery behind them. These painting techniques can be found in Imperial Armour Model Masterclass Volumes 1 and 2