A few weeks ago I made another cover for my Nook Tablet. Unfortunately, I placed the elastic out a little too far and it doesn't hold my tablet securely.
I did omit the metal hardware on this one and I will continue to do so in the future. I can't tell you the number of times I heard it clang against the screen of my book.
Back to the drawing board; each one I make gets better. Time to try again!