Birch Wood Canvas Birch Wood Canvas from Allison Hileman Birch Wood Canvas I stretched and nailed a shower curtain over a self built frame to turn it into a 70" x 70" canvas. gLike Birch Wood Canvas I stretched and nailed a shower curtain over a self built frame to turn it into a 70" x 70" canvas. Textile Design Share R 7 n Allison Hileman Artist/Entrepreneur Chicago, IL Follow Contact