You can sew a fully enclosed pocket in a french seam. Start by cutting your pocket openings with an extra 1/4” seam allowance.
Sew pockets to skirt panels
With wrong sides together, sew each pocket 1/8” away from raw edge.
Enclose pocket opening in a french seam
Press up pocket. Wrap the pocket around the skirt edge. This way the skirt edge isn’t distorted and lays flat. Sew the pocket “in the ditch” to enclose the raw edge.
Sew first part of french seam
Press open pocket on both skirt pieces. With wrong sides together, sew 1/4” away from the top of the skirt, around the pocket edge, down to the end of the skirt. Turn pocket inside out. Press.
Enclose and finish french seam
Press skirt pieces right sides together. Sew 1/4” (or 3/8” for a 5/8” seam) away from the top of the skirt, around the pocket edge, down to the end of the skirt. Open skirt and press. You now have a fully enclosed pocket and skirt seam.