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German papercraft artist Anastasia Baron has offered a very nice Ice Crystal pattern for free. She presented it on German TV in the daily infotainment show "ARD-Buffet". This is the link to her presentation:
To download the pattern just click "Die Vorlage zum Ausdrucken".
The parts look a bit different from usual paper model parts. The designer tried to make everything fool-proof and numbered all parts according to their assembly using the letters of the alphabet. The glue tabs are marked with a little "glue tab" symbol and the numbers on the edges tell you where to attach the parts.
The parts are assembled from the inside out, meaning that all "------------" lines are valley folds whereas all "-.-.-.-.-.-.-.-.-.-" lines are mountain folds.
I have printed the pages and will start a thread on the build asap to show you how it is assembled - in English!