Your suggestions are really great Lynxear. I also have difficulty writing essays when it comes to brainstorming. I think almost all who are studying for international exams like IELTS, TOEFL, etc., do face the same problem. I'll follow your rules. Hope it will help me to do best in my exam, especially writing skill.
Believe it or not, I developed my writing skills after I graduated from high school and entered university. I did very poor in composition in high school and poetry was something I could never understand back then. However, in the honours chemistry program they were very strict about marking our lab reports for grammar as well as the lab results. They did this because they wanted us to move on to a Masters and PhD after the honours program and they did not want to have problems with students writing a poor thesis.
Much later in life I found my arts side and found I could write poetry as well. I have over 70 poems on the internet that have been generally well received by my peer group there. I am still criticized for my simple rhyming format by some but others praise me for my clarity and rhythm.
What I am saying is, don't feel frustrated! Eventually you will discover your "groove" and things will make sense to you. English is not an easy language to learn by any means. Reading will help you a lot. Keep a dictionary by your side and look up the difficult words. Try to figure out any idioms by yourself and as a last resort look up their meanings from a credible source. Eventually everything will fall into place.
As far as essay writing goes, many people try to write the perfect essay in one draft. This is not the way to go. First sketch out a summary of what you want to say. Write down all your thoughts on the subject. This is important. I cannot tell you how many times I have thought of something perfect to say and forget this gem because it is not written down. Write several drafts as well, tweaking your sentences until you are satisfied.
Anyway I am getting carried away here. You will do fine as long as you work hard at it. Nothing worthwhile comes easy.
