The drawing itself is great, but the texture you've used is too harsh. It makes it difficult to see your highlights and shading. I would consider reducing the texture's transparency or losing it altogether/
One other tip, perhaps look at using different lineweights to accentuate the character. Maybe the thickest lineweight for the left arm and hand, then a slightly less thick one for the outline of the character, and use the thinnest lineweight for the details (sword details, helmet details etc).
Nice work overall :)