Originally Posted by charsuewilson

One easy way would be to add borders. I would use 1-3 of the colors in the quilt.

A second easy way would be to increase the size of the blocks, but this will increase the size in both dimensions. I believe the yardage requirement would increase by 3x
Changing to 3 1/2" strips would increase the size by 1.5. Strip lengths would increase to 6.5, 9.5 and 12.5". I believe the yardage requirement would increase by 4x.
Changing to 4.5" strips would increase the size by 2x. Strip lengths would increase to 8.5, 12.5, and 16.5"

I'm with Joyce888, though, to increase the size, add another column and row.