Since snowflakes melt so quickly you need to freeze your cloth or paper. Have the cloth or paper frozen and ready to go for the next snowfall. Place the cloth or paper outside and let some snowflakes land on the dark surface. Quickly, before they melt, examine the snowflakes with a magnifying glass. Many snowflakes are "broken" and so you don't see the whole six-sided crystal, but with persistence you'll see some beautiful examples.