Good organization of garments before ironing: start first with garments that require low temperature and finish off with those that require higher temperature. This way you can gradually warm your iron. It helps you to:
Save waiting time: it takes time for the iron to switch from high to low.
Avoid garment damages: if you do not wait for the iron to cool down sufficiently before ironing delicate fabrics, they can be damaged by the hot soleplate.