Experience: I was painted by Andy Warhol

He wanted to paint my portrait every year for 10 years. I was so young, I didn’t realise what an awesome opportunity this was It is autumn 1978 in New York. The little round stool is hard, the studio cold, and I’m doing my best, aged 10, to sit still. There is a woman nearby, but I can see only silhouettes of her, intermittently, between bright flashing lights. I hear phones ringing, people chatting, but it’s mostly a peripheral, dizzying blur. My focus is on the photographer,