Nice job! Will you be adding his goatee?

Although for some reason he's always clean shaven on his official card art...
http://tfwiki.net/mediawiki/images2/...ritus-card.jpg
http://vignette3.wikia.nocookie.net/...20060522004602

But the toy is goatee'd
http://tfwiki.net/mediawiki/images2/...y_Detritus.jpg
http://www.tfu.info/2004/Destron/Detritus/detritus.htm

Perhaps it was deliberately done to make a 'reverse Wreck-Gar' situation, since G1 Wreck Gar is bearded in canon but beardless on the toy.