1, in a joking situation: Yes, we are all lovely babies.
2. If you think the words are not very friendly: I understand that everyone has their own growth process. Maybe I am not perfect now, but I believe I will get better.
3. If this sentence is criticism or accusation, could you please elaborate on what needs to be improved? I am willing to listen and improve.
4. If it's just meaningless comments or banter: Never mind, thank you for your comments.