really good take on lara, but i kinda feel the background looks pasted, if you know what i mean, the hair should have cast shadows on her arm, since light its coming from behind, the foreground being so nearby, shoul have more detail, more density, and fade to blur as it goes in direction of the horizon! and the zone behind her, should be bathed in that divine light. if you put god rays remenber the area that is not touched by it will be very dark , and one final thing, since she is on the sand you could have been more criative with it, and give it volume, since sand creates many forms, also, foam from sea racts to light too and gets very bright, and the area of the sand that is wet, becomes light reflective
i agree with everything he said ^^^^ Ill add that I would have skipped on the godrays because automatically in a piece so dark as this one your eyes wiill automatically lock into the brightest point which is that cloud then the rays lead you to her shoulder and what you really want is too have the viewer look into those deep eyes you made. You just need to push your work a bit further I can tell you got the skills just from looking at the hair and face.