C'est ma/mon ... This is my...
Je l'ai apporté aujourd'hui parceque... I brought it today because...
Je l'aime parceque... I like it because...
Questions:
Pourqui est-ce que c'est spécial pour toi?
Why is it special for you?
Qui te l'a donné?
Who gave it to you?
If it is a book:
Qui est l'auteur de ton livre?
Who is the author of your book?
Quelle est ta page préférée?
What is your favourite page?
Quelle est ton illustration préférée?
What is your favourite illustration?
Combien de pages est-ce qu'il y a dans ton livre?
How many pages are there in you book?
If it is a picture (a photo, an illustration, or a drawing):
Qui est dans ta photo/ton image/ ton dessin?
Who is in your picture?
Pourquoi aimes-tu ta photo/ton image/ ton dessin?
Why do you like your picture?
Your child may also come up with her/his own questions. They may say them in English, I'll help translate them into French and post the question(s) on this page. Good luck!