Procedural Sun Shader

Hello out there,
I have a bit new stuff that's worth sharing.

During my current study project I went a bit deeper into shader creation inside Unity 4 & 5.
And I have to say, that I always thought it would be harder to create some nice shaders :D

There are certainly still quite a few things, that I could optimize a bit more, but I am happy with the results for now.

The shader is fully procedural, based on some generated noise maps that you can adjust to your liking in the editor, or in this little webplayer showcase.
Feel free to play around a bit with it ;)
 

As always, I'm open to feedback and would appreciate comments and suggestions.

That's all for now.