In this video, I use my Floral Heart stencil to make a flower-petal-edged mandala. You will need a piece of paper at least 22 inches square to accommodate the whole circle shape. I used Rives BFK 22 x 30 white paper. You could also do this technique on fabric with fabric paints, maybe for the middle of a tablecloth.
You will need:
Floral Heart stencil
paint (I used Kuretake watercolor pans, but you could use gouache, watercolors of any sort or acrylic paint)
paper (at least 22 inches square)
Ideco foil glue and silver foil