Back in the earlier days of my career there were lots of marker renderings and felt tip marker sketches. It was here that I learned to sketch quickly and precisely in order to convey feeling and emotion in my sportswear concepts. While I was at Puma, I was lucky enough to design Kien Lieu's signature skate shoe, outsoles for German footballer Lothar Matthaus and many early concepts for Puma's newly created technologies Disk & Cell.