Finally really happy with my concept and design. Her name is Eclipse and she is the symbol of the battle between light and dark. I have used an eclipse as it is my favourite symbol of light v dark. The largest eclipse design theme choice is seen in her entire body being like a dark shadow with just her visor and feet showing a glimpse of light and colour, like she herself is an eclipse with a sun behind her. (But is she fighting for the light or the dark. I will show it in the hero piece) So her feet aren't just some cool space sneakers on a space suite 
Well actually, they kind of are, because that's also cool, and she has the personality that would custom fit something like that. I will try show more personality in the hero piece.
Her visor also uses a lot of colour like a bursting sun from behind a moon/planet or like a sunrise almost. Her skin and hair and lights inside her helmet cabin is/will be full of light too. I have used sun and sky colours mostly to help the eclipse theme.
She is also in a space marine type of suite to further emphasise the celestial/eclipse nature of her character/mission/world and battle ground. I chose this rather than a Mayan/ sun worshipping fantasy god type design.
The back concept shot will be a much simpler render of just the lines and base colours. No need to show texture and such detail again.
So I am starting the hero piece from scratch and not sure I will finish which is a huge bummer.
