This is a really cool little art project! Basically gluing wrinkled tissue paper to a canvas, painting it, then going over all of it with an oil pastel (maybe a colored pencil or wax crayon). Would make a neat art piece, or a background for something else.
The 19-year old artist is mainly self-taught and uses old-fashioned tools — such as markers, pens, crayons, acrylics — to create his illustrations. He has yet to break into commercial success, but as his style is developing and improving each time new images appear, we will likely see a lot of him in the future.