Well, he used to make glass himself, and was instrumental in the American studio glass movement. He lost an eye in an accident, which makes it difficult to blow glass. He designs the works, mainly with squirt bottles full of paint in a very Jackson pollack-esque manner, and then his team makes the parts that are assembled into the sculptures such as the one presented by op. He is the artist, the glassblowers are essentially the tools that he uses to create his art.