Suggestions by @ramonamanolache

Josephine Langford

as Emma Carstairs in The Dark Artifices (trilogy)

Score: -10

Alexandra Daddario

as Lucie Herondale in Chain of Gold

Score: -10

Courtney Eaton

as Cordelia Carstairs in Chain of Gold

Score: -15

Madeleine Madden

as Cordelia Carstairs in Chain of Gold

Score: -12

Domhnall Gleeson

as Henry Branwell in The Infernal Devices (trilogy)

Score: +8

Emma Watson

as Charlotte Branwell in The Infernal Devices (trilogy)

Score: -1

Hero Fiennes Tiffin

as William “Will” Herondale in The Infernal Devices (trilogy)

Score: -13