Pre-wash t-shirt without fabric softener.
Print "The Angels Have The Phone Box" stencil onto freezer paper (matte side).
Carefully cut out with an exact-o knife.
Set iron to medium. Place cardboard or newspaper inside t-shirt. Place stencil on t-shirt, then carefully press in place with the iron.
Use the foam brush to gently paint on the fabric paint.
Allow a few minutes to dry (15 - 20 at most), then carefully remove the stencil. Finish drying according to manufacturer's directions.