Hi! My name's Wendy and I've been lurking here for a over a year or so.

My hair's been purple and pink since the beginning of summer but I've been itching to put my Atomic Turquoise to use.

I have sideswept bangs and in the past, I've seperated a top layer and dyed it purple, whilst having the bottom layer pink.

I kind of want a color cascade with the turquoise but can't imagine it in my head.

What color pattern would look best?

Purple, pink, teal
Pink, purple, teal
Teal, purple, pink
etc

Thanks in advance!

Glad you're de-lurking
Teal purple pink if you want a kind of gradient effect (blues + pinks = purple).
If you want something more separated keep try purple pink teal.

I agree with Jude's suggestions, and would suggest the same.