This would be great if I could believe the attachment of the wings.
PS: I'd also offset the star cluster in the background so it's not right at the top of the wing. Author, with some tweaks this could be a great image.

Nice idea, but I recommend to have a closer look at the masking of the girl/angel. The edges can do with some softer and more subtle edges here and there. Good luck!

ok i have fix some things

Really have to say that I love the blending of arm through the clouds. Perhaps take a bit of 'coolness' blue color out of the arm below the clouds to allow the flesh to be warmer from the 'sunlight'. Nice job.