Cut some of the sheet music or book paper into strips a couple inches wide. Wrap the strips around the wreath form, hot gluing to secure. Continue until wreath form is completely covered.
Cut leaf shapes from additional sheet music or book paper. The shapes do not have to be even, and it looks better if you have leaves in different sizes. You'll need at least 80 leaves.
Fold each leaf in half and crease down the middle to give it some dimension, then open them back up.
Glue the leaves onto the wreath form, overlapping them and attaching them at different angles. Layer different sizes of leaves. It's a good idea to use silicone finger protectors to ensure you don't burn your fingers with the hot glue.
Continue adding leaves until the entire wreath is covered.
Add any embellishments you like and secure with hot glue. Also add a loop to hang the wreath with. Use plenty of hot glue to add the loop and and allow it to set completely before hanging.
Display inside or somewhere protected from the weather.