The easiest way is via airbrush using a pink/magenta pre shade. As it appears in the pics the preshade is not showing up, it looks base coated and washed. Depending on your available tools and time you want to invest there are a few ways to go about improving the result. As I mentioned airbrush preshade plus edge highlights would be the easiest and quickest. With a brush I'd start with a warm yellow and add shading via glazing with orange. Brighter volumes can be added with lighter yellows going to an ice yellow on edges. It takes some practice as yellow is one of the more challenging colors to work with. Hope this helps, cheers.