There's nothing quite like seeing the transformation that takes place in the great outdoors in autumn. Starting in September, green leaves gradually get speckled with tints of orange, yellow, and red hues for all to admire during the season. By preserving these autumn leaves, you will be able to make a wreath and take in this beauty for months on end in your own home. All you need to make this fall craft is glycerin and an organic emollient to keep the foliage from drying out. This method will also work with green spring and summer leaves. The process requires some experimentation, since some leaves don't take well to the glycerin. But the ones that do will be beautiful and last long enough to make the effort worthwhile. For best results, always cut branches in the cool of the evening, and never use leaves that have been through a frost.