高一英语短文改错

高一英语短文改错
Last Sunday moening ,when I was having a walk in the park near my home ,I came across a crew make a new film with one of my favorite actor .I didn't have my camera with me at time ,but I rushed back home to get .Unfortunately ,by the time I got back ,they have finished the scene and actor couldn't be seen everywhere .I was really disappointing and about to leave when he walked out a building .He was right there in the front of me .I couldn't believe my luck-not only did I had my photo taken with him ,but he signed his name on my shirt.