Your score is based on a few things:

1. How many questions you got right vs. wrong. Obviously, this is important, but your score is based on far more than this.
2. Where in the test you got your wrong answers. Generally speaking, earlier questions are slightly more important than are later questions.
3. The big one: the level of difficulty of the questions you got right. Harder questions are worth more points than are easier questions.

So, there's really no way to analyze your score much deeper than: you are well above average in verbal and below average in math. You probably noticed that even though your RAW verbal score was lower than your raw math score, your PERCENTILE verbal score was higher. This is normal; the scores from each section can't really be compared to each other.

As for improvement: go out and get a copy of the Official Guide and a prep guide of your choice. Your goal is to relate the things you learn in the prep guide to the questions in the OG, whose explanations generally aren't the greatest.

Good luck!