You cannot expect to have prescription on how to do art. It's about stepping back after you're done and saying "this sucks" and improving on that. Sure, there

You cannot expect to have prescription on how to do art. It's about stepping back after you're done and saying "this sucks" and improving on that. Sure, there's methods and best practices, but they're not nearly as relevant as quality of your judgement on your work, developed through practice and exposition and, in part, inherited.