The curve on those pieces is very gentle, so it should not be too hard to do. I would suggest you make a couple practice blocks. You may even want to get a new ruler with that gentle curve to ensure accuracy. But if that's the design she wants, and this is really the first thing she's asked for, I'd try to make it for her, rather than change what she wants to something that's easy to do. Good luck! We're looking for a finished photo !