I think once you get more details around it, it may take away the 'doll' effect. One thing that I notice is that the skin tone on the human looks a little washed out. If the light is reduced that might take care of that and bring the skin tones out a little better and that too may help the 'doll' look. I also think it might look a little better to have the angel either a little higher or a little lower. Higher gives into the sterotyping that angels are higher beings, lower implies more of a guardingship and servitude, at least to me. But, without seeing more, it's hard to know if this will matter to the finished product. Now you have me wanting to see more! :o)