I found a rectangular silver metallic mirror for $40, but is it too big? It takes up the whole 28" of the wall behind the sink. Does it draw attention away from or to the short wall that turns back? Should I continue the search and look for a smaller mirror? If so, how narrow should it be? Thanks for your feedback! You can see other pics throughout my posts on my Powder Room redo. The room is a Nearly 8'x3' half bath. Thank you in advance for your help!