Flip a couple of your leaves over, and brush the “lower” half of each with a little water.
Press each against the cake, so that the dry part of the underside is sticking up over the edge of the cake, as pictured.
Repeat all the way around the cake, varying the angles of the leaves.
Once you’ve made it the whole way around, repeat with another layer, down a bit from the first - as pictured.
Again, vary the angles of the leaves, overlap them randomly, etc.
For the final row of vertical leaves, use your pizza wheel or a knife to cut across the bottom of several leaves, before applying them. This straight edge will go along the bottom of the cake, touching the cake plate.
Alternatively, you can position whole leaves overlapping onto the plate, and just trim the excess when you’re done.
I like to go back with one final row of leaves to form a horizontal border, as shown.
Shortly before serving, pile the top of the cake with fruit of your choice.