I may refer to my gazebo top as "Frankenstein" but I've also saved $80.00 by repairing it time and again rather than replacing it. It's been through wind storms and hail storms but with one great product and my sewing machine, it lives to see another summer!
Tear Mender is great for any type of repairs on fabric, denim, leather or canvas and dries 'rubbery', not stiff so it helps to prevent further damage. You can order it on Amazon for $19.99. Some of my tears were pretty horrific and thus required extra patching and sewing.
After stitching, I apply a thick layer of the liquid and let it dry overnight. I just use my finger to spread it -- it dries up quickly and you can just roll it off (remember doing this with Elmer's Glue?!). You could use a brush but I find it's easier to do it this way. This bottle has lasted me (and several friends I've loaned it to) for three years now so it has more than paid for itself.
No time to decorate yet but here is my retreat where you can find me almost every evening.