Step one. Cover the bowl with plastic wrap.
Step two. Paint Mod Podge onto a leaf, and press the leaf onto the bowl. Repeat with various leaves, overlapping the leaves as you go. As you layer and press the leaves onto each other, excess Mod Podge will squeeze out. Just brush that over the outside of the leaves. Continue until the base is covered and half the sides are covered with leaves.
Step three. Because the leaves are not flat, they kept popping up and sliding around a bit. To hold them in place while the Mod Podge set, I covered the wet leaves with more plastic wrap. I pressed on the plastic wrap to smooth out the leaves and help them stick together. I placed the covered leaves in the sun for about 4 hours, then I carefully removed the outer layer of plastic wrap and let the leaves dry completely. You could probably leave the plastic wrap on while they dry, but it will extend the drying time considerably.
Step four. When the leaves were completely dry, I sprayed them with an application of Krylon Triple Thick Glaze. Mod Podge tends to be slightly tacky when it dries, so the glaze helps cover up the stickiness. Also, the leaves are still very pliable, and I thought the glaze would make them a little firmer and help the leaves adhere better.
Step five. When the glaze is dry, carefully take the leaves and plastic wrap off the bowl. Carefully peel back the plastic wrap from the inside of the leaf bowl.