That looks like a cool instrument. The ukulele is a relatively easy instrument to learn. Certainly easier than a guitar. I would quite like to build an instrument, but my woodworking skills are not great. I recently went to a talk by a guy who makes medieval lutes. The bowl is made from a set of identical pieces. He makes end blocks with flats at the appropriate angles. He did admit to using modern glue. I was asked not to share pictures of his work as he likes to maintain his privacy, but it was really good. He's done a lot of research into designs based on old paintings.