I just added a more dramatic lighting, darkened the overall figure ( to making the overall silhouette easier to read) and more detail on the hair and also rim light ( to emphasise the moonlight's effect). I recommend working on a larger canvas if you want to do more detail work. The highlight on the both eyes are usually on the same side so do take note on that when you draw. Also, look more into ambient occlusion for painting if you wanna learn more about rendering in general. Use references when you are unclear about how to paint or draw something and just do more studies on 3D forms and planes. | Artwod Feedback