Leaves must be completely dry. Melt beeswax in a double-boiler. Can use old candle stubs. (Optional - add a few drops of cinnamon oil). Hold leaves by the stem and dip in wax. Let excess drip off, then lay them on waxed paper to dry.
Make a pressed glass picture by buying two dollar store frames, then taking the glass out of one of them and using it for the backing of the first frame. Place your favorite pressed leaf in between the two glass panes. DIY art/DIY see-through glass frames
Leaves dipped in wax to preserve color. I would like this hanging over my kitchen window this fall. -- beautiful idea for a mobile or general hanging decoration, would be better with resin than wax IMO