I think you did a great job for this being your first drawing on a tablet. Love the coloring and detail on his clothing as well. It's a wonderful character and I believe you have certainly done him justice.
Thank you Hollytheterrible", it`s not easy but I`m learning It`s so different from using real watercolour and paper. You dont need to be afraid to make a mistake or using wrong color, you just "delete" it without causing the painting any harm. My second painting "Carrie Reilly" is much more improved in color and highlights but there are still things I need to learn more of. Just wait and see!