One possible version:
Well,to be a good child,I should study hard at school.I must listen to the teachers carefully.I should also be friendly to others and take part in all kinds of activities.At home,after I finish myhomework,I can help my parents (or my grandparents…) clean the house,wash the dishes and some clothes.
And on their birthdays,I will give them gifts or do something special to show my love.
I'll give my best wishes to everyone in my family.