A splendid work, indeed.
However, I'm sure some critiques won't hurt, seeing that you said it yourself. =)
The text "INFINITY" is nice, however, it's a bit unclear. If I may say that it's covered up by those black fogs... You can do something about it, really. You just put the 'fog' in the wrong position that it covers up the text. True, it can create an artistic effect in some way, yet in your case it 'erases' some part of the letter 'F' and 'I'. Not a really bad mistake, really, but why, I'm just pointing out what I have in mind.
Now, the text below the title... I believe you want it to be blurry and a little bit unclear, yes? If so, you ended up making it completely UNCLEAR. I have some difficulties in reading them, and perhaps it's my eyes fault--but I don't think so.
Overall, the other effects are great. Really good one, I admit. I like they way you blend the render with the background.
I'm sorry if my words are too harsh or maybe they have mistakes inside. English is not my first language in the first place.
Keep up the good job, though. =)
JAP