I did a quick look at the link you posted to the quilt on Pintrest. It would be a nice pattern to begin with and would be very easy to enlarge to make the size of quilt you desire. In the picture it looks like the middle rows have 7 squares in each of them. After the first row of 7 squares then the next row add 2 squares. Do this until you have the size diagonally you want and then start decreasing 2 squares each row. You have received some excellent tips. to add my 2 cents worth is: 1. There are no quilt police, no matter what anyone tries to tell you! It is your quilt do it your way. 2. There are many ways and techniques to accomplish the same thing. Experiment and do they way you find easiest. 3. Enjoy and there tons of How to videos, but me careful you can spend all your time watching them! LOL!