Drawing awesome illusion stairs. Freehand anamorphic illusion. Mixed media. Materials used: Pastell paper: light gray. H graphit pencil (Derwent) Markers: Letraset PROMARKER Black and white charcoal pencil. Derwent pastels White gel pen. Stabilo markers 0,4. Black Faber - Castell pen 0,7. Soft eraser.