Yeah, that glaze does crazy things on porcelain. I think you have a piece of mine with this combo, but I'm now doing more tea appropriate shapes thanks to all my teachers here on TC.
I apologize for these photos and for the length of this post. I just took them quick to show some new stuff, and I think the settings on my camera are screwy. They look kind of washed out on my screen.
Here's a shot of the cup in the detail above.
I've been messing around with a bit of cobalt underglazing. I turned out pretty close to what I had hoped, that is that the imagery would move and blur a bit from the glaze and ash. It seems that the more intricate the brushwork the more interesting it is when it's washed out a bit from the firing IMHO. The imagery here is depicting a Vajra or Dorje, the Tantric Buddhism lightning-bolt symbol. It's porcelain glazed with a subtle celadon.
Some shino on porcelain, looser style.
Plain celadon on porcelain
A Chawan with shino on stoneware, dipped and brushed off with a stiff brush. I always seem to make my chawan to small, so I think I over compensated here making these almost 6"w
One of it's little sisters in teacup size
kyusu (terrible picture)
That's all for now, thanks for looking