After applying a couple of coats of polyurethane and letting it set for a couple of days, the shelf is now complete and ready for installation. The shelf went in very easily and looks pretty good.
At the wife's request, I mounted a 14" mini fluorescent light on the underside of the shelf. The installation was pretty easy, and the fit was practically perfect. Then I secured the electrical cord to the wall using ¼" nylon cable clamps.
And here's the shelf with the light turned on. This should provide more than ample illumination for the wife's craftwork projects. Now it's time to fire up the barbeque and cook up some dinner for the family!