It's really good, but I think it's fair someone offers a constructive critique.
The lines are smooth and the inking is clean, the coloring is nice and soft, however, you should be a little more careful about proportions, specifically in terms of where they relate to the viewer (the character is fine, no worries. The only real thing I find wrong with the image is that she lays on her back with the viewer at an oblique upward angle, however the proportioning from the focal point to the horizon make it look like she's either a couple dozen stories tall, or that there is a spatial warp that somewhat stretches her (mild exaggeration, but you get the idea). Other than that, no issues and really nice work.
4 stars on overall image,
5 stars on artwork