I'll try to answer your questions, hopefully my math is right. m-fay you can certainly use that panel but it would be easier to figure out your borders if you could make the starting size 24 1/2" sq. you can do this by just adding a small border around it. Then it is a divisible number.
We will come up with 6 rounds, at least we'll try
, but again it is your quilt and you can stop anytime that you feel it is large enough for what you want the finished product to be.
this is an example:
Round 1,3,5 would be 4 1/2" wide unfinished
Round 2,4,6 would be 6 1/2" wide unfinished
If your center starts out as these sizes finished::
12"x 12" your quilt will finish at 72"x 72"
12"x 18" .................................72"x 78"
12"x 24"..................................72"x 84"
18"x 18"..................................78"x 78"
18"x 24...................................78"x 84"
24"x 24"..................................84"x 84"
These are finished sizes, so your starting center before any borders would be 12 1/2"x 12 1/2" instead of 12"x 12". I hope I have answered some of the questions, if there's anymore or something I missed just let us know and we'll try to answer.