I first stuck some plastic gems onto felt with my glue gun, this created a problem as it was hard to sew close up where the glue had oozed out.
This picture shows how messy the glue gets!!! I tried to trim off as much as I could without cutting the felt and sewed beads around the central gem going around twice with the thread to secure. I didn't take photos as I went so this is the final result.
Coin for sizing purposes. Now to decide how I will attach the decoration to the shrine? Glue (messy!) or cut out a neat circle and blanket stitch around. It may be too big for my purple shrine that I am making (?)