I am writing to thank you for your congratulations on my success in the translation contest. In your letter, you told me that you wanted to know how to do well in translation. Here are some pieces of advice.
First, you need to grasp the basic grammar knowledge, which enables to you to understand the sentences correctly and translate the original language to the target language properly. Second, a wide range of extensive knowledge in different fields is preferred because the more you know, the easier it is for you to make clear what the passage is talking about.
I hope these pieces of information are of great help for your future study and translation.