The first thing to do is to toast yourself on a job very well done! Then, I would do something simple to start.I like to mix linear with wavy, so I would go down the seam line from top to bottom doing a wavy line. Example - upper left corner, start at top of 2 blue triangles, do a wavy line (think orange peel) and meet at the bottom of the line. Then proceed doing a wavy in the other side (in the white stripe), then a wavy into the white print. It should look like a snake or an elongated 's'. BUT, start at the center and work your way to the edge and then turn it around and go from the center to the other edge. Then you can turn it sideways and do it in the other direction or just stop. It is small enough that this would be ok. It is also small enough that it shouldn't be to hard to do on a home machine. But, it would be a great help for you to go online and purchase a walking foot. You will be very, very happy you did. Remember to not worry if not perfect (that is where the wavy lines help). The more you do it, the more comfortable you will be.