Total sweetness, I really like that twirl in the middle, I personally wouldn't have one with the rainbow and picked a theme like fire or ice etc. But that's just me. How exactly did you get the twirl so consolidated?
I just made 4 layers with black backround and hints of green, red, yellow, blue to each one. Used iWarp and swirled to what I wanted them to look like, merged and made one swirl to the left