My prints keep coming out off centered or off from where I actually want them to be when I press. Is there any technique or trick to know if your shirt is perfectly centered.I always think they are then they aren't....another thing, is it normal for the print to split when you stretch the shirt but go back to normal? Is there any way to stop this? I'm using jpss I thought that it was stretchable? Idk sorry for my dumb questions...