Excellent concept drawing. I'm liking all the little hidden features you've worked into the design, particularly the secret loops on the tail for hidden weaponry. That's a nice touch.
Artistically I really like the pose of the model, especially his paws. The free paw he has held out in front of him is very well drawn. The different textures and materials you have included as well are very well done. Great job!

Cheers very much for the kind words.

There's a lot of sneakiness incorporated in the design as a vulpine simply would have to play to his strengths; Agility and cunning. Hence why there's little in the way of armour.

I am happy with the hands... for a change. They are blasted well hard.

Cheers for the comment. I hope to see more of your own workings soon.