I'm just starting out and have finally gotten to trying some shirts. I'm finding they look great when I make them, but as soon as I wash them, the light transfers leave a white film around the design and the white transfers seem to crackle and leave marks where the white is. I hope someone knows what I'm talking about. I'm guessing that maybe my heat is wrong, or the time is wrong. I'm using a no name heat press that has it's degrees in C. It also just has a screw thing to turn in order to change the pressure. Can anyone tell me what I could do in order to figure out what is right and wrong without messing up a bunch of shirts? Does this sound familiar to anyone?