Exploding nebula

Learned how to make 'good' nebulas from a tutorial here (*Qzma has very beautiful work and I'm glad s/he shares how s/he does it). So now I'm on a nebula making fad of sorts and this is my first one.

I follow the directions of the tut almost to the letter, but I am trying some things on my own as well. For instance, I added a blur effect to one of the rendered cloud layers the tut askes you to do: what I did will be my secret.

I am by no means an expert, but I am having fun and that's what counts.