Stars of ice,
small and nice,
fall from skies,
do entice.

Flakes small,
softly fall,
Earth's white shawl,
us enthrall.

Made of snow,
like fluff flow,
fleeting show,
pretty though.

Day 12 - a tri dodeca form. 

Invented by Bill Temple, founder of the PoetsPub site, it is a  pretty simple format. Each line is of three syllables and each stanza has four lines. There are three stanzas so a poem would have twelve lines. The rhyming is open to the individual.