Congrats on improving your score! That is important in b-school admissions and does increase the ranking of schools you might be able to consider. BUT... you should also understand, as I was just saying to someone else on this board, that b-schools (like it or not) do not make admissions decisions solely based on the GMAT. They aim to make a holistic assessment of your past, present and future.... they want to know what past experiences you have that you'll bring to the table (in particular, examples of leadership, teamwork, making an impact, going above and beyond); they want to know WHY you want an MBA and why their school, and they want to know about your future goals. It should all make sense and flow.... your Past + your MBA = your Future goals.
To get into top 10 programs in particular, you really need to stand out from the crowd and show what you can contribute, and what makes you unique. Solid work experience is an important factor too, I wasn't clear on your experience based on your post? If you can put together a strong package in terms of GMAT, resume & work experience, recommendations, essays, interview etc and make the case for the points I mentioned above, then you could have a shot at some reputable programs.
Good luck and keep us posted on questions and progress!
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