Can I have some advice or suggestions please . Not done her hair before . This lady is wanting to go darker about level 8 and keep some hilights . I was thinking 8/0 6% on roots 8/0 & 8/3 3% from regrowth to ends . Do you think I need to fill the blonde or will the 3 give enough warmth to go bit darker . Foils to lift root to match blonde then tone 11/02.