I really wanted to paint birch trees in our nursery but I didn't want it to look like a mural. I wanted it to look more like wall paper. So I got a quart of the same paint and had it mixed at 25% lighter than the wall paint. I used a small roller to paint the trunk of the tree. Then I went in with a smaller brush to paint the branches. Next with the same brush I painted the darker bark marks with the original wall color. This was probably the hardest part because it is hard to see what you have painted because the colors appear the same when they are wet. Now you are done. It is really easy, also because the colors are so similar it is very forgiving. Have fun!