veering back to wax and tea bags briefly (not that i would ever bounce around from one thing to another) so that i can post a basic step-by-step of what i'm doing with them. several people have asked, so in case it's helpful to others, here it is...
i'm using purified beeswax from R&F encaustics - i melt in in my Ranger 'melting pot' (a very handy thing).
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make tea and let soak until you like the amount of staining on the bag
dry the bag and take the tea out (but leave the back seam of the bag closed - just open up the ends). leave all of the little flaps folded when you're done.
draw and/or paint on the front of the bag with the usual stuff - watercolors, oil pastels, colored pencils, and/or gouache
when the paint is dry, open up the back seam of the tea bag so it's now almost 4" x 6"
brush matte gel medium lightly on the book page and press the tea bag onto it - let dry
heat up the wax and brush it on (all over the page)
take a quilting iron and move the wax around 'til you like the distribution
with an awl draw designs in the wax and rub gouache or casein paint (or oil pastels) into the dug out areas (wipe off the excess, but maybe not all!)
paint with gouache, casein paint, or oil pastels on the wax
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one thing to remember about gouache, casein paint, and tubes of high quality watercolors, is that while they're water soluble, when you use them without adding water they stick beautifully to wax (or to oil pastels). it's only when you add water that they're not so compatible. so i use all of these mediums straight out of the tube a lot. amazingly they still go a long way when you use them like this.