Hello Everyone!
so i am in a bit of a pickle and am not sure what to do. I am being Hermione from Harry Potter for Halloween


I am dying my hair to make mine look like hers because I love it. My question is if i should pre color my hair to make it lighter before I go to the salon this weekend or should I just bring this picture and let the stylist highlight away. SO will this look ok with only highlights in it or will it still look not right/does it require more color

Pictures for reference:



It looks different in different lights
thanks!