Patterning?

Hey there, folks. I'm still pretty new to making my own patterns, only having made a couple plushies, a cow tail, and shark tail from on-the-fly patterns I created. Though there's one I really am having trouble wrapping my head around: A leopard gecko tail.



This is my fursona, a squatty little creature who I'm trying to make a partial of. The tail is supposed to be bumpy and ringed like a leopard gecko's, but I just don't know how to pattern that...
I would like to avoid doing a 2-piece that makes it look bumpy on two sides, but flat across the top and bottom. I'd like to make it bumpy and ringed all the way around, if possible. ;w;

So I guess my question would be: How do I pattern a leopard gecko tail so that it bumps out all the way around?

Any help is much appreciated!