point to be remember, it is correct to write, "sometimes i go" but not write, "I sometimes go". 2nd it is better to write a story in past tense 

A Lizard

I love my aunt's garden. It is a carpet of sweet-smelling herbs and flowers and it also has many fruit trees. I sometimes go there to pick flowers, and spend a  time with my aunt. However, today while we were sitting in the garden, I suddenly saw a lizard which was staring  at us with its bright eyes. I leapt to my feet and leaving my aunt alone, I ran into the house. She laughed at it because she was used to seeing insects in such a big grden. however I still remember lizad,s ugly face. It was ugly and horrible. I hate it.