1.在衬衫里放一张硬纸板。这将为你的设计提供一个均匀的表面，并将防止漂白剂渗出到你的衬衫后面。用一支白粉笔画出你的设计草图。不要担心，如果你需要涂抹粉笔线和重新画。你画完画，粉笔线就会被洗掉。2.把衬衫的两侧折叠在纸板下面，用橡皮筋或夹子固定，以防滑落。准备一个小碗，里面有不稀释的，织物安全的漂白剂。把你的毛巾放在手上擦去任何滴下来的东西。 3. It's time to make your design permanent! Dip your brush in the bleach and drag it on the edge of the bowl to eliminate dripping. Use steady strokes to trace the chalk lines of your design. For an even bleach line, you will need to reload your brush every two inches. The fabric will quickly soak up the liquid. Work in a natural position, and take it slow. You will quickly see your design appear, like magic! 4. Continue to trace your design until you reach the end. Take a break, and return in a few minutes once the bleach has had time to react with the fabric of your shirt. Are there un-even spots or light areas? No problem. Simply go back in with your bleach filled brush and even out the design. 5. Once you're pleased with how your shirt looks, let the piece sit in the sun for an hour or more. This will allow the bleach to process and lighten. Depending on the cotton content of your shirt, the color of your design will range from dark red, to orange, to pink, all the way to white. Rinse and hand wash your shirt, and hang to dry. Your design is now permanent, safe to wash with like colors, and ready to wear.