My first attempt didn't go so well, with a minimal number of bar and large glitters. Yesterday I thought I'd try again, with a layer of CtD over Deborah Lippmann's On the Beach, my favourite blue.
This attempt was MUCH better! I still had to coax some of the bars out, but I had much better luck with the large glitter, and even got a number of bars!
I'll have to try this again to confirm, but I think it just needed a good mixing.