Are you a botanical artist, do you aspire to be a still life painter, a painter of bar scenes, a science fiction or manga artist or a seascape painter? Some people know from birth and others find themselves in their later years (i.e. Grandma Moses in her 70's). Some students learn on their own, or go to a four-year art school, some prefer to take an art class or art course from time to time. Others teach themselves using art textbooks, art videos or work with other artists and learn from each other.
Struggling to develop their art, some complain that they need better brushes. Some art teachers say "put a little blue here." It's not the brushes. Sure the light could be better where you paint or draw and it's not the little blue that goes here. What's missing in the art education of some is an understanding of the visual basics that underlie all good painting.
Here is a list of the basics that underlie quality drawing and painting.