Hi Aditi,
Shyam last posted in the forums over 3 years ago (and last visited over 1 year ago), so you might not receive an answer to your questions. It's sounds like you're looking to improve on your GMAT Score though. Before I can offer you the specific advice that you might be looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich