My "wall sculpture" artwork includes 3 series: "Earth Series" (sets of long skinny totems), "Outside of the Box" series (sets of box paintings), and "Organic View" series, which are larger versions (done to your specs) of the "Outside of the Box" series.
start with special paper for charcoal soft and hard pencil, dry and oil pastels, marker pointer, pencils. Move to acrylic can be used with water. Water color and water color pencils. Oil paints and knife and finger techniques.