Blind or Contour drawing is a favourite with drawing teachers to develop hand-eye communication. It is essentially outline drawing, and blind contour drawing means drawing the outline of the subject without looking at the paper.
The end result doesn’t matter. What is important is carefully observing the subject in order to follow contours and space, with your hand and eye. This trains your brain to tap into its right hemisphere, which aids us in drawing shapes, lines and angles, positive and negative space, instead of objects that we can “name.” Naming objects is the domain of the left brain, logical, realistic but also one that shackles our drawing ability to that of a ten year old.
Above you can see my first blind drawing. My vegetable patch in the back yard. One can just make out the garden edging and the tomato plants, and stakes. I used a soft B pencil which made a nice effect when I drew on the rough Gesso finish of a hard cardboard backed frame. I painted a little colour in a pen and wash technique and then soaked it in tea overnight. I added a little outlining in pen. I was surprised by how much my right brain could do without the dominant left hemisphere taking over.