Originally Posted by
ckcowl
It depends on the pattern and if there is also other fabric used with the layer cake. How many squares are in the layer cake? Are the squares used whole or cut up to be pieced into blocks? The pattern should tell you how big the quilt you making will be. You need your backing/ batting to be larger than your top.
I agree. There usually is another background fabric to be used with a layer cake squares. Good Luck.