Step one: dark-ish royal blue or jean blue , Step two: lower opacity slightly and set onto multiply Step three: duplicate layer and make it red and Gaussian blur slightly Step four: make red lower opacity and keep it as a multiply layer Step five: clipping mask both and it should create the effect in the drawing ^^ Step six(optional) : if you don’t like the crispness of the blue shading Gaussian blur it or blur it VERRRY lightly so it’s not so sharp :) Totally didn’t learn this from legend of korra….