Lovely colours - actually, the rough yet delicately painterly look of the piece brings many illustrations of the old Castlevania game series to my mind. I like the colourscheme because the pale purples create a sinister feeling while the stark red of the cape makes the character pop up better, bring him to the foreground. It also adds power into the picture.
I think this could be even better if the image was continued some more downwards. The foreshortening seems a little vague and makes the character look a little short because the foot hides under the bottom edge. However, have achieved the foreshortening well enough for a viewer to get the idea of foreshortening -this is not always an easy task, especially when a character has such detailed armor on as this one.
My favourite part of the piece is the character's face. It is very expressive and intimidating. His cold stare draws my gaze again and again back to his yellow eyes.
Definitely, absolutely very beautiful! I'm in love with the design of the armor, with all the ridges and the spikes. I love the sense of light, especially the shading and how the sword gleams so brightly!
There's definitely a great sense of movement in here, and you portrayed it perfectly with the mist around his feet, his position, his billowing cape, and the movement of his hair. His hair just looks so soft and lush and I want to run my hair through it! His face is very realistic--hollowed cheeks and deepset eyes and a strong expression!
The only thing I have to say I'm not too crazy off is the subtle blurred, gritty effect of the piece. But I suppose that's just me, and that's what you're going for.