Is that a blonde Star Sapphire?

No wings on Mystia and no antenna things on Iku's hat. Other then that this is a fairly good drawing of everyone.

Yuka looks manly. >:|

Who's the girl between Yukari and Suika?

Judging by her clothes, it's Layla.
No, this is not a good drawing. Too many errors and dislocated eyes and mouths.

Have to give the man credit for his effort. He can't capture every detail.

First thought Star Sapphire was Belarus from Hetalia for a second.