I keep forgetting to upload this on my own account and it's getting harder to find in my favourites, so here's my current ref sheet somewhere nice and accessible where everyone can get to it.

Ref sheet was done by  temrin

A few clarifying notes to accompany the image, which I will use to improve this in a future revision:

The jacket isn't denim, it's cotton. It's blue because it's an ex-military medic jacket with the patches ripped off.

The line up the right of his torso is a strip of metal fur, where a wound was rebuilt.

The bandage on his tail doesn't cover an injury, but that's one for the story. (Whenever I finally publish the bloody thing!)

A version of the sheet exists with genitalia, available on request (I'm hardly squeamish), but this will likely be sufficient for 99% of the art I intend to have created.