A few people here and on Rug Hooking Daily have asked for this, so I am showing you a video on YouTube on how I finish a rug. I hope it uploads okay.
First, before you start finishing a rug according to this video, place the finished piece upside down on a towel on your ironing board and spritz it with water. Then place a damp dishtowel over top and steam the rug flat. I try to steam till the dishtowel is dry. Then I remove the dishtowel (the rug is still damp), do any necessary tugging to square up the rug, and leave the rug to set until dry. THEN I do everything in this video. And, after hemming the rug, I will press the edges again.
So, without further ado, here is the video.