Sketch, color and sketch are the basis of artistic painting. If you want to set foot in the field of three-dimensional design (such as environmental design, interior decoration, product design, etc. ) or pure art (such as Chinese painting, oil painting, sculpture, etc. ), these three basic courses must be learned. But if you just want to draw illustrations or cartoons, you just need to learn to sketch. Of course, your own artistic vision should also be improved, and you should know how to feel what harmonious colors are, how to match colors to look good and so on. Most of these come from natural feelings, but you can also reach a higher level through training. However, if you want to study in an art school, you must learn these three basic courses.