When l was...l was...At the age of ... l took up ...because...And now... Помогите составить мини сочинение с помощью вот этой основы

When I was in London I was in Trafalgar Square. At the age of 12, when I went to London, I took up free Souvenirs in Trafalgar Square. And now when I look at the souvenirs I remember about London and Trafalgar Square