Literature
Double Bubble Advanced Tweaking
This is based on Double Bubble Tut by piethein21 (https://www.deviantart.com/piethein21)
Just a few tweaking ideas and inspiration, and a few ideas of how to approach tutorials in general =D
And, of course, the first tip is - move the stuff around =D
Replace hemisphere
Variations like bubble, hemisphere and scry have a similar shape, so you can use any of those, or mix them up in the same fractal =D
Hemisphere:
With everything else unchanged, scry replacing both hemispheres:
Tweaked versions with scry, as example of some cool shapes that can be obtained:
Add effects and blurs
This is an infinite source of variety, so i'm not even trying to cover all the possibilities.
B