I first work on the skirt. I've had this one long skirt that my grandma made a long time ago. Well I cut about four inches off. I don't have a picture of the original, because I actually started this project maybe two years ago. I picked it up again recently for the purpose of Harry Potter :)
After cutting the skirt to the length I wanted, I had to hem the raw edges. First step is tacking by basting. I folded the raw edge up about three quarters of an inch and used a general stitching method (basting) and sewed about an eighth of an inch from the bottom to secure it temporarily (tacking). I used pink thread, because it's easy to see.
Next step was to begin the hem. To hide the raw edge, I fold it down about an eighth of an inch, and did a backstitch.
To secure this hem, I sew it to the skirt by using a slipstitch.
After sewing all around the skirt, I remove the pink thread.