Woohoo! We now have the Simply Scored Tool to use and it's just brilliant! There are just loads of different ways to use the board and you can add a diagonal scoring plate or a metric plate if you find that easier to use.
This is my first attempt at a rosette, they are so much easier to make than you think. This one was made from designer paper and scored every quarter inch. Then the strip of paper was concertina'd and the ends joined together to complete the ring. A circle punched from coordinating paper finishes off the centre.