I think your quilt needs one more row of squares on one side.
The shape is called "The Golden Mean". Pictures come in 3x5, 5x7, 4x6, 8x12, ; you get the picture! The formula is one by one and one half. If your blanket is 20 inches wide, that would make it 30 inches long. Somewhere near that shape is pleasing to the eye.
I have made receiving blankets for lots of babies: one yard by WOF. Usually that is about 36x44". This shape was loved by all recipients.
Last edited by maviskw; 03-21-2014 at 06:56 AM.