Just all my layers in vaguely the same order I colored them in as people seem to like those sort of things
Lots of base colors + layers clipped to those layers, usually on normal or multiply with varying opacities
Usin' Kyle T Websters megapack and watercolor brushes mainly

(sketch layer was traditional and edited in PS before I lined, but I deleted it so there's just a vague placeholder img instead - i moved her head down and redrew her arms and repositioned her legs)