Still "torching..."

I'm experimenting with my torch fired enamels, and I tried some copper wire shapes today.  The copper heated up okay, but the enamel is peeling off after the copper has cooled off.  Picture shows where the copper shines through.  I also have white enamel powder, but it comes out pinkish even after three layers of firing.  Can't figure that one out.  So, the pink bead in the picture is supposed to be opaque white, but hey, I'm not complaining. :)  I like the pink.  I guess you never quite know what the end result is as you fire away.  This is sooo much fun!