@Alda i was wondering about why the pentagram is turned downwards and went looking for symbolism, and found Eliphas Levi:

"A reversed pentagram, with two points projecting upwards, is a symbol of evil and attracts sinister forces because it overturns the proper order of things and demonstrates the triumph of matter over spirit. It is the goat of lust attacking the heavens with its horns, a sign execrated by initiates."

Is there a particular reason why you've chosen downwards-facing star? Personaly I'm a bit bothered by that particular symbolism.