I think it looks great. I have been talking about making my husband a guitar quilt for 5 or more years (he's been playing for 52 years now), but haven't gotten around to it. Did you trace your nephew's guitar? I've seen patterns for flat top guitars with the round holes, but never an arch top with "F" holes. If you don't like the look of the metallic thread, you could try a pearl cotton the same color as the pick ups. Or try metallic pearl cotton. And there are bronze and black strings, too, if you don't like the silver.