I decided on a rough and dirty cover up with loose cotton. I hoped it would look sort of artsy/beachy. It doesn't. It looks like poo, frankly. Oh well. Not every project is a winner. Even though I sort of hate the results, I'm glad I tried.
I'm not yet happy with the results, but I ran out of energy and time, so for the moment, it's awaiting a redesign. As for the birds, though they're not exactly what I wanted, I'm happy with them. And for less than $15, I'd say they were a deal. And thanks to the canvas, I can take them anywhere.