Open question: how do I win more confidence, so that trying receives a job?

nothing seriously! I am 17 and search there a McDonald's conclusion past to me in a Mall and her employees I do not live in US,…, who am it the straight best job, I on at this moment to think can. but I do not have to work on my confidence and I can? = I am not shy and I am convinced the best in confronting people and in its. and if I work there, I must regard and ask the person straight, what their order is. how do I become finished that, before I go over, the job to ask there? I need straight points of any good. thanks!