I wanted a bag that was made all in one piece and not sewn together so I came up with this design. If you want it bigger, you can just add more chains at the beginning. There is no multiple so you can chain as many as you like to get the size you want. The only thing that will change is the number of stitches that I list in the instructions and the amount of yarn needed will be different. If you want your bag bigger (or smaller) I would suggest making the bag as instructed to get the idea of how it is worked and then make a different size.