be careful as the ends of ur hair are the hardest to lift as they have a much bigger build up of colour, most salons would pre lighten ur hair first to do this which also in very long hair can be quite harsh if theres a lot of colour on the ends, u dont want silky brown roots and red strawy ends i do think u wud suit the dark red tho and much easier achieved with no damage to ur own hair xx god i sound so sensible xx