Hi Elizabeth, There's one important thing that you should remember and that is to be confident that you can make it. And the only way you can get confidence is being prepared. So, do your best to be prepared for it. You can get a good IELTS reviewer book or you can also ask a professional teacher to help you do a review. This is actually one of my courses online. Practice as much as you can with native English speakers as well. I wish you well and success!

Hi Elizabeth, I haven't reach C1 level, but I reached B2 level. I scored IELTS score of overall band 6 in Feb 2017. Hopefully, I have a chance to practice English with you. Thank you :)