把染好色的布料用塑料袋包起来。 把布料在袋子里放置8个小时。 把布料从袋子里拿出来，摘下橡皮筋。 用盐水将布料浸湿。 用干净的冷水冲淋布料，直到流下的水变得清澈为止。 晾干或烘干布料。 头三次洗涤时，体恤衫和其它衣物需分开。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Place the fabric into a plastic bag, then tie the bag shut. Be sure to press out all the air inside the bag. You can also place the fabric into a large, re-sealable plastic baggie (i.e. Ziploc bag), and then zip the bag shut. During this time, the dye will set into the fabric. Try not to move the bag during this time, or you might mess up the colors. It would be best if you left the bag in a warm, sunny location. This way, the heat of the sun can set the dye into the fabric better. If you are ha