I made a picture for my daughter to give to her daughter and we just switched the fabric from 14 count Aida to 11 count Aida to make it larger. Dividing the number of stitches per length and width by the number of the Aida cloth will give you the number of inches you will wind up with. Going from 18 count to 14 count will make it larger and then going from 14 count to 11 count will make it larger yet.