This is really good I especially like the shading of the metal and there isnt much to critique on. But this is what I found:
You have you light source figured out, I would say work on intense as the you draw and paint the areas that light would struggle to reach like the crouch under left arm (which you did well and could even make darker) as well as what ever the scarf and tail might cover.
Be aware that the scarf might create reflect light so expect some of the last real to be reflected on the metal.
The creases were the gluteus and inner thigh are could be more and there would probably be creases where the clothing tucks into the metal.
I'm not sure about the face whether you have a 2d style or not but if you ever wanted to achieve the 3d look, think of the snout as a rectangle.
Add more of a bend to the waist to make that S-curve
Add shading to the armour to indicate all the different planes and overlaps and what is above or below what.
Overall I really like what you've done and I am just knit picking, the piece is really good especially the armour.
If you want to learn more about shading armour maybe watch this video: https://youtu.be/7wB5YA8tOVw
I hope what I say was helpful