I think those planets are dangerously close. I mean... eventually gravity is going to bring them together causing a huge catastrophy. And then it won't look as pretty you've made it look. =) (see what I did there?)
Putting a planet on Screen/Lighten very rarely works in your favour, try sticking them on normal and then blending as appropiate, it's harder yes but it looks better for the most part. Remove some of the middle pink, far too much of it serving no real purpose. Overall it's not bad, bit too bright altogether for my taste and the stars at the top are a bit blurred etc. Not bad, keep at it.
Not necessarily...If the planet (the one at the bottom..or the terrain) is already in orbit, it's a moon, and therefore, the scene is possible Planets do not collide like that unless the kinetic energy it is moving at is really high, or i.e. greater than the gravity acting on it. Yeah, the stars are screwed up...I noticed that after I submitted it...And I wanted it to be a little on the bright side. Agreed with Soaked, I do need to change the colours a little (planet glow etc). And I cbb'd make a tag for the SOTW Thanks for the comments all though
