Love the design and colors.
That is perfect for stitch in the ditch. Since you are a new quilter that would be the easiest to do. You can stitch all the way across the quilt with diaginal lines.
Borders are a great place to learn free motion since the border is always to the left so no bundling the quilt inside the throat area. I have a simple heart design continuous line stencil that I got at Joanns, it is good for beginning free motion.