No, that is False. They normally occur in the layer called the Troposphere. The Troposphere is where all the plains and the jets fly. The Mesosphere is too high,
I think digital artists often begin by sketching their ideas on paper so if they change their mind, it would be a lot easier to mess up the paper instead of the computer. Also, by using paper, digital artists can plan out their ideas and draw it on the computer later.
