I've made one coturnix quail egg so far. The little eggs can be difficult to blow without exploding them. Do the button quail eggs have spots? It's been six years since we raised any and I don't remember.
It's a batik process using bees wax and dye. Here is a goose egg I just put varnish on. It's the final step in the process. I only make them during Lent unless I do a special Christmas ornament. I try to work on one every night, though some take several days.