The first thing I did, since this is a very heavy canvas, was I pinned the first seam together and used my ironing board as the pin cushion. I then sprayed the seam with a temporary adhesive and added a patch of material to it for more support. This was my backside. (Now when I do this for regular seams, such as jeans, I just use a piece of iron on interfacing to the back of the tear to hold it together.) I had to use something different for this project because you will be able to see the repair from both sides. Now I was able to carry this to my sewing machine with the seam held together exactly where it needs to be. I attached an open toe foot to my machine, so I can see where I am sewing.
I trimmed the material away from the seam on the back side after I sewed it because this side will show also.
Above is a picture of the stitch up very close and below is the finished project. It turned out really nice and I don't think it will be noticeable at all, unless you are really looking for it! I think my brother will be happy with it.