When I created my jeep cap pattern I knew I would be using leather for the bill, but that canvas was an option. I hadn't used the canvas method in a number of years and the particulars were fuzzy. Joey, my daughter, has recently tried it out.

She traced the pattern and cut out three layers to start with,
basted them together
and then ran it through her machine.
It was fairly soft, a good choice for a baby hat or small child. But not what either of us wanted for our hats. So, she hand stitched two more layers in place. This bill is not as stiff as my leather bill, but I think it will work well enough.
I will be putting it to use soon and I will post it here when I've finished. Must get the hat knit first! --Sinéad