Strolling through the streets of Cartagena while on holiday was not the day I thought I would shoot an image which would go on to become a National Geographic cover. I glimpsed this woman on a street corner selling fresh fruit and knew straight away I wanted to photograph her. We spent some time chatting while she cut me some mango. I then asked if she would mind me taking her portrait. I only had the chance to take eight pictures before the genuine smiles faded away. The first shot is the one that was chosen. It was selected for the cover of National Geographic for the whole of Latin America.