Eeeey, first journal in ages.
Anyway, I made some vortex effects a while ago, I'm putting them up on dropbox if anyone wants to use them for anything https://www.dropbox.com/sh/bisr8akbrwbjog5/AAB5cfJKFasan-Q53ECij2-Na#/ the full files are 1280x1280, the default colour is greenish, but you can greyscale it and colour it again if you want.