I did some UFO blocks, but want to enlarge them before quilting. How do I figure how many yards I will need for the borders? I started with a 12" block, added a 1-1/2" WOF border and now I want to add a 3" border so that the blocks will be larger. I am new to quilting - a retired great grandmother enjoying having time to do new things. Any help will be appreciated.
Thanks so much