Hi Pinali...I am sure you will improve by leaps and bounds... Just make sure that you focus well and log your mistakes so that you can revisit them.
Also, reading some grammatically correct books might help you immensely. Personally though, I feel that GMAT is just the first stop in the journey, not the destination itself.
Therefore, just following a set of steps and rehearsing them for a short period of time isnt really the best thing. Make reading and writing a habit, so that you are prepared for the challenges which pose themselves in days, months or even years ahead.
I am taking the GMAT tomorrow....been preparing for almost a month now...
To make myself comfortable with passages, essays and to be able to focus more, i have resorted to blogging. I do feel that along with reading newspapers, journals, magazines and novels, blogging is an awesome method of improving ones vocabulary, critical reasoning, concentration and patience.
I have written a few lines about my preparation on my blogpage. Link to it is
https://insomniac-anish.blogspot.comWill update it tomorrow after my GMAT...
Wish me luck