I really like this, the originality within this composition is right there before your eyes. In a way her dress resembles a rose, which alludes to the image of the true beauty from within emerging from the substance, regardless of how beautiful or grotesque that shell may be on the outside.
I like the combination of different mediums you used. While it might appear common enough its unique in that we see colored pencils and watercolours applied to the same piece, I like how you done it in such a subtle way too.
All in all, a job well done