The way I made mine:
Purchase 16 x 20" white canvas from Michaels ( I got a deal on a set of 5)
Black acrylic paint, large bottle
sponge paint brushes of multiple sizes
craft papers of your choosing, cut into leaves ranging around 1-2" in length
Mod Podge-shiny or matte finish, I chose matte
Paint the board all black. Use two coats, letting dry in between coats. Don't forget the edges also. Wash your brushes out well.
I changed my mind on the center color and swapped around the leaves a bit. Then glued them down with a glue stick.
As it appears before the Mod Podge-ing. (Above) Then I used Mod Podge in matte finish (below) to gently layer on over with a clean foam brush. Careful, you don't want the edges of your papers to lift or get too soaked and buckle. One layer of Mod Podge on:
Let dry between layers. You can do as many layers as you like or none at all. I may stick with two.
Now to let dry and see how it turns out.
Voila! Wall art!