When Jesper engages with the volcra in the train car, he initially starts firing with the revolver in his right hip holster, runs out of ammunition, holsters the pistol, and then swaps to his left. However, soon after placing the goat down, you can briefly see the left revolver still in its holster on his left side as if never used, and after finishing off the last volcra, Jesper spins and returns his revolver back into the right holster.
When Alina first arrives at the palace, a Tailor begins to fix her scars including ones on her forehead and arm. However, there are several scars above her right eyebrow in the middle which are never repaired. Given the Queen wanted to have her scars removed it would be expected they too would be removed (even though these are real scars on the actor.)