hi to all who would like to help me,

i took gmat in may and scored 620(v25 m 50) .i was disappointed because i expected a bit more.as i scored 580, 610 and 650 in three kaplan tests and 650 and 700 8) in official gmat prep.i scored 50 in maths with varying score in verbal.
could anyone help me to formulate the strategy to take the test again. i would also like to know how to analyze verbal section after practice.

aks