You might want to tone down the reflection of the planet surface, keep in mind that most planets only reflect enough light to be visible, only cristal/water surfaces should reflect light that intense IMO.
Also, try keeping your dark side always completely dark, unless some other form of lighting is provided for that spot like... vulcanism, or maybe another smaller star.
The surface texture looks nice, and after adding some kind of cloud or atmosphere layer it will probably look better.
All in all, quite good for a second try, mine looked like crap compared to this