Tutorial: How to Paint Clouds (or Anything)

(Draw your stencil on kraft paper and place where you like on the wall. Outline it in blue tape.)
(Level blue tape and bottom of stencil.)
(Take off stencil and fill in taped outline with paint. Feather the sides to avoid hard edges.)
(Let paint dry for about an hour, or to the touch. Then re-tape stencil on top. Paint over edges carefully with original wall color.)
(Remove stencil. Fill in any patchy spots, then let dry and sand any hard edges that stand out.)

Now repeat about a ka-zillion times.