My part-time job

My part-time job is sale of a Western-style cake in the department store . Part-time job is pleasant, but It was very busy and hard for me. I work on the weekend for eight hours. I worked today for eight hours. Through a part-time job, I thought that I should have studied more English. When I guided foreigner , I coudn't speak in English. My major is English but I coudn't it. So, I should have studied more English.