[aiyumecool559]

Blue star, aoihoshi, is good but long name. Maybe if you like

Hikaru or Hikari　光 mean "Shining" or "light".　
Hoshi　星 is a name and hoshiko 星子 too.

Good names too, Mami 真美, means true beauty. Ayane　あやね is a good name too. Or Ayumi, あゆ美 is a good way.

Last name, very common is Suzuki and Sato. 田中星子 ｉｓ　ａ　ｇｏｏｄ　ｎａｍｅ．