Does it float in the air like a ghost or is the robe touching ground, hiding feet? Place a shadow underneath to indicate the distance from the ground.
The face in itself is quite nice, but the blobby neck makes it kinda hard to picture what the body under the robe is like. It's essential at least for the creator to know what's under the robe, in order to make some sense of the whole thing. The right shoulder is missing..? I'd also introduce some other colours in the palette, now it's just shades of brown.
