It's a very simple model. If you have seen this model before, please let me know. I will give credit to the author. Thank you! ;)
Correcting (16/5/2015): Only today I realized that this star has been
created by dear Doris Lauinger. www.flickr.com/photos/52643438@N04/7979223730/in/dateposted/
Mine is a little different, with points in the back side.