Have you ever looked at a quilt and said...
“Wait – does it look like an object is coming off the quilt, or is there added contrast between two objects”? Or maybe you like the lines showing the drape of a dress. Well, I have just the tools to add to your toolkit. Go gather some Inktense pencils, Prismacolor pencils, a kneaded eraser, Tombow Mono Zero Elastomer eraser,