Glue 6-8 paper bags, the folded side up, placing the glue in a capital 'T' and then placing the next paper bag over top making a stack.
Cut out the design of the snowflake you'd like. I cut about 1-2 inches off of the bottom where the opening of the paper bags were to make the snowflakes various sizes.
When the design is finished, apply the dot sized velcro on both sides of the bag. Attach one side of the velco on the front side of the stack of paper bags; and apply the other side of the velcro to the back side of the stack in the same spot.
Spead open and attach the velcro together. If you'd like to hang the snowflakes from the ceiling, hot glue some fishing wire to the top of the snowflake and then using sewing pins attach the other end of the fishing wire to the pin and push the pin into the ceiling. Using sewing pins will keep from creating noticable holes in the ceiling.