These are the only gingers I know in anime
Kushina from Naruto
Erza Scarlett for Fairy Tail
Shana from Shakugan no Shana
Ayano Kanagi from Kaze no Stigma
Grell from Kuroshitsuji (debatable since he's wanting to take on a more feminine appearance)
Kallen from Code Geass (although her hair short)
Aki Izaiyoi from Yugioh 5D (maybe the older version of her)
Asuka Langely Sohryu from Evangelion (but perhaps not that red)
Riruka from Bleach
And quite a few more, but I don't think you'd be interested in them.
I hope these helped.
When in doubt, just take the next small step.
With that next step take a deep breath. It calms the mind.
When the mind is calm you realize the best is still yet to come.