Great work!. You have done a wonderful job on the rendering of the character overall.



My main critique is in the position of his arm on the right side of the painting. It feels like it has unnecessary tension. Even in that stance where his pose is intense, his arm would still be in a more relaxed position. His elbow would rest closer to his side while his forearm would angle outward. Try mimicking his pose and you will see what I mean.



Additionally, the metal part of his bow is blending into his right leg a little bit. Primary because they have similar values. I understand that you have the correct shading in reference to your life source, but I would suggest exaggerating the contrast on your bow a little bit. Maybe make the metal of the bow feel a littler shinier.



Other than that he looks good.