Nice!
I have no 'drawing' talent.. .at.all. Like so many, my skill level stopped increasing at age 5.
My wife started painting acrylic on canvas.. Abstract / Impressionist stuff. She's been at it for only 3 years or so, but last year she sold one of her paintings at a gallery.. for like a friggin lot of money. I was amazed... mostly because I don't "get" abstract art. My own failing.
I AM a darn good woodworker, though. So I support my wife's hobby by building her canvases. I use some pretty heavy weight cotton duck that she picked out and I get by the roll. I fabricate the stretcher arms from basic lumber stock. I can make any size canvas, up to 12 foot by 12 foot. She generally asks for 4 x 3 or 2 x 3. Very large format stuff.
She paints on canvases that would have cost over $200 to buy, that I built for around $30 in materials.
Technically, they are "strainers", not "stretchers"... but they are Archival Quality.