Another way to transfer a design onto fabric that doesn't require a light box is to lay a piece of bridal tulle over your paper design. Trace the design with a permanent marker (since you're working on black, you might want to try red or another color that you can see against the black.) Now lay the marked tulle over your project and trace again with the fabric marker of your choice. The ink, chalk, pencil, whatever, will go right through the tulle and onto your project!