My diary about postcard

Somebody says "Postcards always spoil my holiday.'So do I!
I promised I would send a postcard to my friend after I had arrived in Shanghai and she was very happy.But......it seems that sending a postcard here is not so easy.
After I had bought postcards, I began to think what  i should  write on it because I used to wirte letter to her. I spent whole morning writing it. But when I finished, I found that I made it dirty with ink!
A moment later I found a problem, here isn't any post office near my uncle's home!
I felt very sorry to my friend, perhaps I need to send her the postcard after I go back home.

 I think some sentences are still Asian styles. You translate word by word. You should have more long sentences