One of the problems blind drawing presents is the re-placement of the tip of the pen after drawing a contour. It takes a good deal of skill to complete an outline in which the starting point coincides with the end point. Even if one accomplishes this, lifting the pen point from the drawing surface removes any point of reference. The inner contours of the figure may not fit within the outer silhouette. This is one of the reasons that I peeked when I drew the figure below.

Person Walking Semi Blind Drawing
Pen and Ink Sketch
10″x8″ 111# Moleskin Journal