Ok, first off, I gotta say the shading is amazing. It's so eye catching and really gives the drawing more depth, which is a definite sign of stellar shading and is why I love it so much.
The colors are also great. I do wish there was a little more contrast between the dark greys and the reds, but it's still solid.
The line art is fantastic as usual. Looking through similar drawings of yours, it seems you have a knack for making characters with striking bold lines that compliments the shading really well.
The background is also nice. Though it's not the most detailed thing on its own, it really enhances the colors of the main drawing excellently.
There's honestly not much I can say that's bad about this drawing. Everything here just fits my sensibilities perfectly to where giving it 5 stars feels more than justified. Keep up the good work!