https://www.skillshare.com/classes/Illustration-by-Design-A-Guide-to-Elevating-your-Drawing-Skills/963813011

It can illuminate an idea, simplify a complexity and give us the feels all at once. But what makes a good illustration work? Design thinking!
In this class, you'll learn to define your creative goals, develop your symbolism and evoke stronger feelings in your drawings using a few simple principles from the world of design.