Spend some time getting familiar with the included Fresh Paint app. You can use your fingers, and it’s like a Color-By-Numbers app on steroids. It works better still with the Pen. You can load pics as the background, then add, modify, edit, or use them to understand how artists use texture, shadowing, brush strokes or simple pencil lines to compose their pictures. It’s not 3D like a CAD product, rather, an enormous palette that wants you to store your drawings on OneCloud for anywhere-access.