If you mean to ask what is making the lightsource inconsistent, yes, the selective outlining is part of it. Having it on only one side of an item gives a definite direction to the light. If you look at the mid part of her dress, it looks like the light is coming from the front, but if you look at her feet, arm and face, it looks like its coming from the top right. Maybe you should put the moon in first, as it will determine the light source for you.