I used these foam stamps to print on both fabric and paper, and it worked well on both - but the fabric looked a little nicer.
Step 1: What You'll Need:
Step 2: Stack Ready Cut Shapes
You want the foam three deep for best results. Peel the backing off two of the shapes and stack them on to of one another. Press them together firmly and make sure they're lined up well.
Step 3: Attach to a Foam Backing
You could also use a bit of cardboard - you just want it to be pretty thick.
Step 4: Repeat!
Step 5: Making Your Own Shapes
I drew on the foam with a pen and then cut it out using an x-acto knife. It's pretty easy to do so long as you have a steady hand. :D
Once it's cut out, attach it to a foam backing like before.
Step 6: Printing
You want to brush the paint onto the stamps - you don't want a thick coating on the stamps, since it tends to glop up around the edges and make things look funny. I used sponge brushes and paper plates and it went really well.
I also had better results after the paint sat out for a little while on the plates and firmed up a bit!
You'll get the best print by using a thin layer of paint and a good amount of pressure. You can see the results I got trying to dip the cat head stamp into the blue paint - dipping the stamps resulting in too much paint and lots of swirly raised lines.
It worked MUCH better on muslin fabric than it did on construction paper.
Step 7: Setting the Paint on Fabric
I laid a piece of muslin down on the ironing board before I put the printed fabric on top.
I still would not recommend washing items printed on with the majority of water based paints, but this will at least keep it nice and colorfast for daily wear and tear. :)