Backlit snow portrait using location flash

One of my best ever images was the result of a best laid plan gone horribly wrong (thanks, weather forecast). Instead of a romantic Valentine's portrait in the moonlight, we were faced with the coldest, slushiest, iciest rain/snow instead. But I still needed my Valentine's shot, and I thought perhaps I could get something decent despite the challenges. Find out how we went from a disastrous shoot to a soggy but successful one,