For a bold statement, design a t-shirt with flipped text reading "Defy Gravity" curved along the upper edge of the design. Below, use an illustration of a teen jumping off a skateboard in a comic-book style. The font should have a bold, blocky look, with shadowed text for depth. The bottom part of the text will reflect upside down, creating a mirror-like effect. Use HDR effect to make the character pop, and lens flare for a dynamic shine around the skateboard. Keep the design on a transparent background for flexible shirt application.