not quite sure what you have going on...or are asking...as for your bias strips...are those your applique parts of the celtic design? what do you mean sewing crosses on top? are you thinking of the quilting itself? like you are appliquing (with bias strips) a celtic design...then when your (block-candle mat) is all made (applique complete) you would make your sandwich (batting-backing) put it together then quilt it (sew crosses on top??) then add binding around the outside... does that help, or are you trying to do something different and i am mis-understanding?