Here's the beginning of a piece that is lighter weight canvas. More suited to a vest or jacket. I usually use heavy canvas and use it for purses.
I made the stripes using painter's tape and spray painted with Liquitex spray paint. Then stenciled over that. Liquetex has just come out with this great spray paint that is not made for fabric but works for this purpose. It's not as refined as fabric paint but I like the slight stiffness with the canvas. I'm aiming for a sturdy outer garment feel.
It may get more layers, not sure. Or, I might leave it like this, cut out the pattern with the stripes going in different directions and see how it looks before adding anything.