The basis of the drawing is a boat. The boat stands for freedom and independence.
On the bow of the boat we see a fish jumping (fish never sleep). The shadow of the boat forms a walrus, a mammal that enjoys using swirling movements to move through the water and knows little rest.
In the rear sails we see a face with large dark glasses and an open mouth. The hair is fragmented which means interrupted sleep. The open mouth is yawning (whichshows lack of sleep). On the stern above the helm is a bed where a man lies who cannot sleep. He is the one who cannot dream (dreamless).
The front sails show a collection of T-shirts glued together. The T-shirts stands for freedom and peace, but by being stuck together they do the opposite, they do not let you go free to find rest.
The snake represents disturbed peace and squirming in bed trying to fallasleep.
In the middle of the drawing is the face of the dream thief. He is responsible for ensuring that we cannot sleep and will have a dreamless night.
Dreamless: without dreams we cannot process our accumulated daily stress which leads to more stress.