LIQUID CHALKS:

From Tracie Miser:

"Liquid Chalk is quick drying and you need to work fast. You can rub, stipple, paint, splatter, dot your images. You can use as a background or to enhance images; especially images that could appear texturized: bricks, stucco, siding on a house, grass and other landscape images. When using as a background, I found a neat technique to be brayering on glossy cs with a dark ink; cobalt or plum by Archival, and then painting (sloppy-like) on the chalk. After this dries, stamp your images using a coordinating ink, again cobalt. do not attempt to cover the glossy cs with the chalk. Leaving some of the underlying dark color enhances the background.

Liquid Chalk is also good for using to "stain" images that would appear that way in "real life"; such as a barnyard or outhouse door. You can get a weathered look by lightly painting with chalk. You can paint before or after you stamp the image, depending on how much "stain" you want. I read that to make a weathered looking door you should combine grey and blue inks on glossy cs, brayer and then apply the chalk. Also good for backgrounds is sponging chalk on dark colored cs, then stamp the image."