Translation of "Initials" in French

My initials are on my briefcase.

Mes initiales sont sur ma valise.

- She embroidered her initials on a white handkerchief.
- She embroidered her own initials on the white handkerchief.

Elle a brodé ses initiales sur un mouchoir blanc.

She embroidered her initials on a white handkerchief.

Elle a brodé ses initiales sur un mouchoir blanc.

The tree whose trunk our initials were carved on was cut down.

L'arbre sur le tronc duquel nos initiales étaient gravées a été abattu.

Tom carved his initials on the large oak tree in front of the school.

Tom a gravé ses initiales dans le grand chêne devant l'école.