Lovely smooth shading. The girl on the right's hair looks soft. Neat costume designs and the I like the expressions. There's a lot of personality in these characters. The eyes are also very well done, and the background gives it a nice setting. The black-haired girl's forearm looks a little off, though. It doesn't seem to follow a straight line and the curves are a little random, though the shape is generally right. Her wrist is also awfully narrow for the rest of her arm. Next time, try sketching a straight tube from elbow to writst first, then add the curve of muscle around the arm afterwards. Other than that, though, it's lovely work. Very striking.