This guide here is meant to give you a couple of valuable tips for starting out coloring. You don't necessarily need to be an artist for this, but having first experiences with digital art will help you greatly.
This post is going into (almost) every detail for anyone who dares imitating his art and writing: I'm going to dig into the tools he uses, his planning process and how the visual means he uses affect the reader on an emotional level. It will also show you why exactly both Miura's art and writing is one of a kind.
Taking a look at the art in previous arcs and compare it to newer ones. Given the recent interview by Natalie Comics, we'll find out the reason why the style has changed recently is the involvement of his assistants!