We teachers sometimes spend too much time telling students about techniques, and not enough time demonstrating how to put them into practice.
For example, I think that teachers should write paragraphs and even full essays in front of their students. This allows students to follow their teacher's thought process as they produce a piece of writing. It also allows the teacher to test the effectiveness of the techniques that he/she normally advises.
If you're attending lessons with an IELTS teacher, ask him/her to demonstrate the exam techniques that he/she gives you.