If you are struggling with writing and do not know how to improve the skill, consider this tip which works greatly for me whenever I learn foreign languages.
Go to a reliable news site (I would recommend BCC and CNN) and pick out your favourite article of the day. Then copy the article into your note. Do it everyday. Do not go for long articles because they will tire you out. The purpose is to make yourself familiar with standard English writing. Especially if you are having trouble with Writing Task 1 (Academic Module), economics articles will be a great help.
Do it everyday. Even just a short paragrahp a day, just do it it everyday. You will see the difference after some weeks.
alienmeo 