This doesn't lead to a tutorial, but it looks pretty simple. Buy a canvas and paint it in the color of your choice, then cut the leaves out of scrapbooking paper or another kind of pretty paper. You should be able to use a regular strength adhesive.
branch weaving - right now our branch weaving is mostly just knots and sticks and flying balls of yarn, but this is really alot of fun to explore with a toddler. It takes alot of focus and some mad fine motor skills, but Charlotte loves trying this out with me =)