Remembering the frustration I experienced in drawing class; knowing that I still pause with expectation before a blank page; seeing the angst on drawing students' faces, I often remind them that their eyes will learn faster than their hands. They learn to look faster than they learn to manipulate the marks they can make on a surface. Their eyes are more sophisticated than their fingers. Frustration sets in when they draw too complete a picture in their mind first.
Drawing is a practice.
Mistakes are made. Learning follows.