Cutting the Canvas
First you will want to decide if you want a gallery wrap or not. A gallery wrap is where the canvas stretches around to the back and stapled. The other way is where the canvas is just stretch to the sides and stapled. This way is harder to stretch as the wood frame cannot be laid flat on the floor and canvas pulled around. The gallery wrap is much easier as you can use the back to help brace while you are stretching and attaching the canvas. I find the gallery wrap is not only be easier but, looks much more professional and finished out. That’s just my opinion though. Do what works best for you and your art!
1) Now that you have decided whether you like gallery wrap or wrapped just to the sides. Roll the canvas out enough on the floor to be able to measure and cut it. Remember to always add a little extra canvas to be for sure. If you chose the gallery wrap, you will need extra to go around to the back and attach. EXAMPLE: If your wood frame is 24 inches and the wood used is 1.5 inches, you will need to cut the canvas to at least 28-29 inches. Beginners add a little canvas. If you choose the side wrap, you won’t need as much, because you just need enough to go along the sides to attach.
2) Now that the canvas is cut, place the canvas (side you will be painting on) front side to the floor and position the wood frame evenly on top of the canvas. It is best to measure around so that it is pretty much the same amount of canvas on all sides. TIP* Look at the wood frame and make sure the best side with no holes, knots, or blemishes is face down. You always want the best side touching the canvas. The side that you will be painting should be as perfect as possible.

4) Once you have continued to work your way out to the edges, you are now ready to do the corners.TIP* Leave enough room that is not stapled down to do the corners properly. You will want to have to opposite edges that go under the other 2 opposite edges.
5) Go to the edges that will go under the other two and continue to staple them all the way to the end. TIP* If there is too much canvas once you get to the end, you can cut some of it. It will fold better for the corners. 



I think I have covered everything, if I have left out anything or you have a different and easier way, please let me know. Any ideas on the topic, I would love to hear them.
Hi,
Just wanted to say how interesting your posts are!
Thanks
Nic