What a cute character! There are a few things that I think would make this piece pop a little more. The skin tones are rather flat and not much variation in pigments. It looks a little on the cooler side, so adding some warm tones would help. Not enough shadows on the face to give detail to the nose and cheekbones, the eyes need to be sunken in a little more too. There is not a defined light source which would help in placing shadows like under the hairline against the skin and around the clothing. The necklace strand disappears into the clothing, so highlights would help to define things like that. Thanks for sharing this with us.