When i woke up while camping the other day, i just saw this amazing picture. After making a foto and a little bit of pdn, that's what i came up with: before: after: The sky blue took up most oft the upper rays but i still think i came up with a good improvement...
I did something very similar to alphawolfs drawing. The tutorial was really very understandable and easy to follow, wich is good for beginners such as me. I did the whole thing without a circle in the middle, which make sit more vortexlike and did the gaussian blur to the outside instead of the inside.. I like the one with the whithe bg better, but i'll post both anyway.