I went to the Creativ Festival in October and this is one of the make'n'takes I did. It's pretty quick and can be adjusted to fit your own materials.
A piece of rectangular cardstock was embossed with dots. Then 2 stamped snowflakes were die cut out and layered on each other using pop-dots. Finally a crystal was put in the centre of the top snowflake.
Punch a hole and put your string through.