Practice your writing skills.

The only way to improve your writing skills is with practice. Write each day a short text about the topics of each of the units seen in class, about your favourite things, about your experieces, dreams, wishes or routines, etc. You can write a Summer Diary with all the things that you do this summer, or emails to a friend (real or imaginary)... The excuse is the least of your worries, the important thing is practice!

Here you'll find some webs where you can fin exercises and tips to improve your writing production:

https://www.teachingenglish.org.uk/article/writing-activities

https://www.grammarly.com/blog/category/handbook/

https://www.esl-galaxy.com/writing.html