The acquisition of a particular skill may seem simple, but the difficulty lies in perseverance and training, and in the professionalization of this skill.
This is clearly and highly applicable to the skill of the drawing, as it is very important that the artist reach stages that qualify him to understand the different dimensions of the painting. The hiring of the right techniques in the drawing may also enable the artist, for example, to transform a simple circle and lines to a face with precise details.
Below are some of the images that show the big difference in business during the development stages of painters skill. This list may not end, so if you draw or know someone who paints, you can share the stages of the development of this business.