About the sewing: I machine stitched, but hand cranked the machine. Start and end at the top of the ornaments and leave long tails, so they can act as the hangers. I used the same white heavy duty upholstery thread for my bobbin and top thread. You can use a tiny piece of washi tape to secure one edge of the ornament while you start sewing, but it's kind of fiddly to remove. I found that holding the two shapes together and just working slowly and carefully was the easiest.
My favorite thing about these little ornaments is that I got to use ALL the styles (and quite a few colors!) of Eyelet Outlet Sequins!