http://www.davidtextilesinc.com/uplo...e%20Hues--.pdf
Nice pattern.
Do you want to make the whole quilt larger by adding more blocks, or do you want to enlarge the size of the blocks, thereby changing the proportions?
Different looks. Your choice.
The blocks are essentially 6" FINISHED nine-patches, with 2" FINISHED sashing.
So if you choose to enlarge the blocks, you would/should keep those proportions.