My technique for snowflakes shooting(russian version of this post in livejournal)More Like This
I capture snowflakes at open balcony of my house, mostly on glass surface, lighted by LED flashlight from opposite side of glass, and sometimes in natural light, using dark woolen fabrics as background.
On a floor of a balcony I put the turned stool (legs up), on them - a glass plate. Previously, i shoot in Canon A650's standard macro mode. For this, from a small plastic bottle I cut central cylindrical part in the form of a tube height 5.5 cm. This height I picked up so that the lens of the camera, pushed in a tube, will be at distance 1 centimeter from the bottom (this is minimum focusing distance of Powershot A650 in macro mode). I just put this cylinder with the camera's lens into it over the chosen snowflake, the lens looks vertically down. For steady shots, i shoot in small series with starting delay 1-2 seconds after focusing, taking away my hands off the camera. With free