Quite nice, I must say. It creates very peaceful and calm atmosphere, nebulas are not too agresive, light is not too strong and looks pretty coming from above. Maybe the rings could have bigger diameter, I think they shouldn't be so close to planet, nonetheless, they looks cool and as I see you used interesting way to make them. Really good work.
yeah, rings are always the worst to make (except if you use 3d programs which I don't almost use, also it's incredible that there are so bad tutorials for making rings only with photoshop, like the twirl filter) in this one I worked more with the light but it doesn't have much of depth or a great composition but it has a really good mood