Hmm I know scars are normal for their line of work but I felt the artist overdid it, looks like slapping it on all over the place.
Its a bit distracting especially with Edelgard since she's a rich student with access to the best doctor available for her rank.
Also a little cheap looking.
Depicting Edelgard with lots of scars is actually quite common, since was chained in a dungeon and brutally experimented on when she was younger. That's probably also why she didn't like being held by her wrists.