I have made Calico Carriages Labryinth several times, I like cutting my squares 6 inch so i have that little more to work with after sewing cutting and pressing I never get things right no matter how hard i try so I stick to picking up my own fabric for the patterns. Keep working with it I would probably go to your lqs and see if they can help you with the issues.
good luck
This is the lastest I made for my precious ruby june