Help with size of boarder corners.
If I cut the boarder 4 and 1/2 inches and in the corners I want to add half square triangles of some of the varity used in quilt and boarders. There will be 8 pcs to make the sqs for corners blocks. What size do I cut the squares to put with another color and sew down twice in the middle and cut to be 1/4 of the square. thanks for the help.