I've painted on Tin white before, but this time I use watered down underglaze, then wax design and washed with colour.
Here's me working on the mug.
I free handed the design painting on black outlines of flowers and then green leaves.
I then waxed the leaves and flowers and washed the whole cup in orange and highlighted bit with green
The final cup!! My mum loves it. Holds about 11 fluid ounces.
Will definitely be using this tecnique again.