This is a roll of wallpaper taped to the wall, and drawn very large with a fat piece of charcoal. The hues are oil pastel. I grabbed the first interesting shape I saw, a discarded plastic sandwich casing and held it awkwardly in my left hand to draw. This is a supremely ugly drawing – but I kind of like it! I used a putty rubber to try and capture the highlights on the plastic window. Text added in Photoshop.