Before and after

The lighter blue glaze is a crystaline one that I'd not used before and, despite testing, I was unsure how it would work in relation to the effect I wanted. I ended up crushing the crystals much smaller so they could be spread more evenly. You can see in the photo below how 'lumpy' the glaze is prior to firing.

I am looking for an effect similar to the blue at the edge of a particular Klimt portrait.