Hi I've got a client that's a base 4 and I coloured her hair with gold well 5vr which was great but she wants to go more copper and lighter like 7kr/7or I know tint won't lift tint so will I have to pre lighten? She also has about 30 gray her hairs short and in good condition please any advice would be great as doing this today and the clients my mum so really need to get it right as you can tell I'm not very confident with colour I must admit it scares me a bit and I need to over come this to better myself and become more confident.