Optional: Use a pliers to pull off the staples and blank canvas that came on the blank art canvases. This step is optional, but I found that I got a tighter wrap by removing the blank canvas.
Lay your printed canvas face down, and center the wood frame on the canvas. Check the canvas edges to confirm correct placement. Beginning with one of the longer edges, fold the canvas around the wood frame and staple towards the middle of the frame.
Fold the opposite edge around the other side of the frame pulling and stretching the canvas as tight as you can.
Staple the canvas into place.
Trim off excess canvas material at each corner at a 45-degree angle to help make the corners easier to wrap.
Wrap the first corner by taking hold of the loose canvas corner and pushing the corner in toward the center of the frame. The goal is to make a small fold from the center of the canvas corner down to the corner of the wood frame.
Fold the loose canvas flap onto the frame so that the folded edge is parallel with the corner. Secure flap with a staple.
Repeat these steps to wrap the remaining 3 corners.