Mix 2 parts warm water to 1 part glycerin (depending on the size and number of your leaves - I used 1/2 cup glycerin and 1 cup of water) and pour into one of the pans. Add your leaves and turn to coat - try to keep them separated if possible but as long as they are coated on all sides you'll be fine. Top with the other pan. Place some cans on top of the top pan to help keep the leaves submerged and leave for 3 - 5 days. Remove the leaves and blot dry – they will be soft and supple and retain their color.
Using your stamp set, ink and ribbon, stamp the names of your guests, leaving room on either side to trim. When you've finished all of the names you can trim the tags if needed.
Use your hot glue gun to attach the tags to the leaves. You can glue a smaller leaf to a larger one for the smaller tags.
Notes
Faux leaves are a great alternative for the real thing!