This could not be easier, just 2 rectangles with ties. I used coordinating fabrics, not a border print to create the skirt.
Look closely at the above picture and you will see buttons on either side of my waist. In the picture below, I have turned the button to the center of my waistline.
As I said earlier in the post, the border is actually a coordinating fabric. The picture below is the back side of my skirt. The seam is where I sewed the border to the coordinating fabric. I cut a 2" wide strip of the contrasting fabric, pressed it under on both sides and then stitched it over the seam where the 2 fabrics were sewn together.
Good luck if you decide to give it a try!