韓国語能力試験を書くためのヒント？

Hi, I'm Gulnora from Uzbekistan, just moved to 東国大学 this semester. I want to take TOPIK 4 next time, but always get low point on 書き込み part. My リスニング and 読み is ok, but 書き込み is hard for me. Anyone who also study 日本語能力試験, can share how you prepare for 書き込み? Maybe good books or study group in ソウル?