How to improve in Answer writing skills and to enhance my capability to handle any type of question of UPSC optional (mains) exam?

Preparing for mains optionals answer writing

Hello Everyone,
I have been preparing for UPSC for past one year.
I have read several books but fail to recall much of the data which I have previous read.
Moreover, I am facing issues like I am unable to figure out the demand of the question and usually end up writing general and vague answers.
I am into my final year of MA in Public administration. I usually score distinction in my MA exams but when it comes to optionals in UPSC, i seem to lack some answer writing skills.
My basic question is how to meet the exact demand of the questions ?

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