Use two thicknesses of polyester batting, with extra 3” of batting on either side of the wood.
It's best to start in the middle and go around.
Draw the pattern of your choice onto the curtains with a gel glue and allow to dry.
Allow it to sit for 5-10 minutes stirring every once in a while.
Allow the entire curtain to sit in the bath for 20 minutes making sure to stir it every 5-10 minutes.
This is so that the top remains the lightest shade.
Place the lower portion of your curtain back in the bath so it soaks in the color and gets darker.
Squeeze out all excess water and dye from your fabric.
Soak the fabric for 5-10 minutes in a soap bath. Then rinse it again and let it hang dry.
Decide on a shape or pattern you'd like to create for your frosted glass pieces, and cut them out.
Make sure you clean the window thoroughly before.