Visiting The Blog of Hannah Rebekah Straw: Making Marks in Black & White is Therapeutic
Hannah talks about how therapeutic it is to quiet the mind by using mark making with just black and white and leaving out color. Although I do not know what medium Hannah uses, I have spent many hours with a sketchpad and a Uni-ball Vision pen which is water and fade resistant) just mark making into the night. The beauty of the Uni-ball pen over the Sharpie pen is that it doesn't knock you over with a smell. Hannah gets much more complex in her black and white drawings, using texture and different levels of pressure, movement and "exaggeration" of her marks. Take a look at her other B&W drawings https://hannahstraw1.wordpress.com/2013/10/24/mark-making-black-and-white/