Go for a walk in a park close to your home and choose a few autumn leaves. Make sure that you choose the brightest and best leaves to preserve. Make two layers of wax paper, place the autumn leaves in between them and cover them with a towel.
Having returned home, you should set your iron on warm. Seal the wax paper by ironing the fabric. In order to avoid scratching the leaves, you must keep the iron moving. By leaving a narrow edge of the wax paper around the leaf shape when you cut it out later, you will keep it sealed and preserved.
In order to preserve autumn leaves using a microwave, you must choose leaves which are not too dry. Place the leaves between paper towels and put them in the microwave oven. Adjust the power of the microwave to medium or low, if it is adjustable.
The microwave needs to run for 30 to 180 seconds. However, the time depends on how dry the leaves are. After taking the leaf out of the microwave, observe it closely. If it is scorched, it means that it was left in the oven for too long. However, if the leaves are curled, it shows that they are not dry enough. You will need to tweak this method a bit before you can master it.
Choose an old book which is not frequently in use, and is large and heavy to boot. Having wrapped the leaves in paper towels, place them in between the pages of the book. You can place as many leaves in the book as you wish, but make sure that you allow about 20 pages in between.