Hi subha,
Actually, I had a problem only for speaking section from the first attempt. I think to improve your reading score, you need to practice reading section a lot. When you start reading section, don't read the whole article at first. Just skim the article, then read paragraph 1 and solve question 1. Then, go to the 2nd paragraph and solve question 2/3. If you do this, you can save your time. To improve writing score, try to follow the format. introduction, body and conclusion. In the body paragraphs, the first sentence should be main point of the paragraph. After that sentence,explain it and give example like in toefl independent speaking. Keep practicing ..you will get the desired score.
ok bye