That said, it was WAY more labor intensive than I had anticipated. After employing a slightly different technique for each of the six shades, I still don't feel like I "have it down". The shades have a template that you peel off to reveal a sticky surface; I used the template to cut the fabric with a bit of overhang, but the trick/problem was making that overhang look good. The hot glue gun was imperative. At first I free-handed folding it over and securing it, but later tried the iron to crease the fold...
From a distance, they look good to me!

Up close, I see a million little flaws. There is no denying that these are handmade. Still, it's fun that we could choose our own fabric and ribbon and was still probably more cost-effective than buying each shade for $20 or more(!).... so maybe in a few years I can justify changing out the shades and work on perfecting my technique! In the meantime, I'm very happy with the way they turned out.
I do want to add another grosgrain ribbon around the top of each shade.... I just ran out of ribbon!