I am a beginning sewer/quilter and would love to make a rag quilt for my daughter. The size I would like to make is a 54x99 cot/couch quilt. I would like to use the 4 patch design using 6" Blocks. Could someone check my math that means a total of 208 squares and if I am wrong could you explain to me how to figure exactly how many squares I will need. I want to use a 1"seam allowance how do I add that on to the squares. I am sorry for so many questions, but I am a very very new to sewing and quilting.