How should I mix paint medium and tempra paint?

Question

My mom works at a day-care and wants to put childrens' footprints onto pieces of carpet fabric as a christmas gift. What is a safe percentage of medium to fabric paint that will be safe for the kids' feet but be permanent on the fabric?

Answer 1

If you mix the two- the tempera will still wash out. How about tracing around the children's feet with a permanent marker and letting the children paint their feet outlines on the carpet . That way it is actually their art- and their feet.