I like your story Yelim, especially the part you added about having a problem with the ticket and then missing the train. That made it more exciting! There are a few small mistakes, I will highlight them for you. Can you figure out what is wrong with each mistake and make corrections?

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  I went into the station. I looked at a map of the subway system, and I found how to get to my destination.

I put the money to the ticket machine, and I got the card.  I put the ticket on the card position, but I can't go through the turnstile.

It was because I put the card on the wrong place.  I put the ticket on the card position.  I heard a sound of subway coming.

So I ran down the stairs, but I missed the subway. I waited for another bus.