Hey
Insiya,
I'm a bit short on information at the moment, so have difficulty giving advice. The only comment I can make now is that the official CATs from GMAC are considered most reliable, so the two you have taken, while they do suggest considerable progress, are not necessarily indicative of your current abilities.
To give more specific advice, I'd appreciate the answer to the following:
1. What is your target score?
2. What materials have you studied with so far?
3. Have you created an
error log? That is, are you currently capable of identifying your weak points and your strengths?
4. When you took the last CAT, did you take it in conditions as similar as possible to the real exam? Same time of day, full length exam with no breaks, no help from calculator/phone, etc.?
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here. Every section starts with a brief diagnostic which will help us and you measure your current ability.