Tried a few more things today with Brusho, namely bleaching out of the colour.
I stamped some images into the brusho with bleach, but didn't get a very good impression, so over stamped in black with an oriental image.
I removed some of the background colour using scrunched paper and used a paint brush on the stamped image.
I stamped the image after I'd removed some of the background using bleach and a baby wipe.
Not that excited about these, still on a quest for the right type of card. This particular water colour paper was textured so I didn't get a very crisp image from the stamping.