What I learned from exam?
1. I did write answers, but did not write them in a manner which can facilitate the examiner. I did not give sufficient and relevant headings. Just wrote away what came in my mind.
2. I had crammed a few things, but none of them were in my grasp during the course of paper. I was just writing what came first in my mind. Thus I conclude that conceptual understanding is a must to attempt CSS exam. I am actually astonished at crammers if there are any.
3. I did not analyse a complete question, i.e. I did not make any rough outlines. Whatever question seemed likely my first heading was INTRODUCTION in black ink and then fire away.

My weakness was insufficient study and practice.

METHODOLOGY TO STUDY
1. Separate syllabus in the divisions given in CSS syllabus.
2. Then write the relevant questions from past papers.
3. Attempt the question. At least make an outline.
4. Analyse your outline and find weaknesses