Kiori, your image link must be broken because it seems you have posted a link to a photo of your mother.
Zeela's star idea : I really like the simplicity of it and the tie in with the Guild's history. Maybe it could be developed into something approaching the impact of Liz_REX's idea, which is great, just not in keeping iwth the spirit of the faction: the text is a little too Rheinlandish, and I'm not sure about the helmet. Like the colours though.