I made the same changes to this Sorbetto that I did for the Sorbetto #1 and Sorbetto #2. I used the extra tuck fabric in the front to fold to the right side for the button bands. This worked great for double cloth fabric, bringing the contrast to the front. I cut 1/2 inch off each side back and added vertical back darts.
Have you tried the Sorbetto yet? I must warn you that it is a little addicting!