I'm using Highwater Clay's Raku, cone 06-6. I'm sure different effects would result from different clays.
The standing figure "Green Mansions" is bisque fired, then one coat of Mayco's "Stoneware Wash" is applied diluted 1:1 with water. That is the specific glaze name given to it (also number 304, I think). It is then wiped off and fired to 4. (That glaze can be fired 06 to 10.) In hindsight, I think I should have diluted it more. It would have been easier to apply and maybe it would have stayed in the crevices rather than covering some nearby areas (the feathers' high ridges to be exact). I'm afraid the color tone in the image isn't entirely true, because it is under fluorescent lighting.
For comparison, the head "Memories Become Bouquets" is bisque fired, then coated with copper carbonate mixed with water. The excess is wiped off and the piece is fired to cone 5. (That's an arbitrary choice; I get almost the same results firing to cone 06 as to cone 6.) Using copper carbonate wash on earthenware gives me a more iron look - what I call metallic - instead of mainly just brown color, as here.
I wasn't able to post pictures of the two pieces fully finished here, but for the finished sculptures, which have been washed with greatly diluted acrylics, see the next post.