Please choose the correct ending to complete the given sentence: Holidays and Traditions: [header] How to make perler bead snowflakes [title] Heat your iron. [step] Plug in your iron and allow it to heat. The cotton setting works best to heat perler beads.

Ending1: Once it has heated to a temperature of about 105ºf (120ºc), place a handful of cotton in your iron (specifically with some cotton balls) and allow it to heat for several minutes. [substeps] The cotton should be soft, with no wrinkles. Ending2: Refer to your iron's instruction manual to figure out how to tell when the iron is hot. Many irons will have a light turn on or off to indicate they're ready to use. Ending3: Remember to create a single, even layer of fluff on top. [title] Blend the perler beads and light clay with a spoon. Ending4: The hot iron, which makes cool frosting, is also more difficult to melt. Use the heat sparingly, as using too much heat can melt your iron.

Answer format: ending1/ending2/ending3/ending4