Recommenders, should be a superior, preferably in your current role and someone who can comment very specifically and anecdotally on your performance. In your case, you should pick the one who can be more specific in their commentary on your actual performance. Also would be nice if they are "in your corner" and are enthusiastic about your going to school. Meet with them, give them a copy of your personal statement or essays (which you should prepare soon), and discuss with them your goals and why you want to go to b-school. Here's exactly what they should do as your recommender:
1.Review a copy of your personal statement or application essays so that their letter of recommendation can dovetail with--not conflict with or duplicate--the rest of the application.
2.Ask you to supply them with additional information like a resume.
3.Describe their qualifications for comparing you to other applicants.
I have been teaching for twenty years and have advised approximately 450 students on independent research projects over the last five years.
I have personally supervised ten interns every summer for the last five years plus worked with over two hundred college graduates in my capacity as trainer for Big Bank Corp.
4.Discuss how well they know you.
I was able to get to know Mr. Doe because he made it a point to attend two of my sections every week when only one was required.
Ms. Smith reported directly to me for two years prior to her well-deserved promotion to the position of Senior in our Big Six Accounting Firm.
5.Choose two to three qualities that you observed in the applicant.
Jane has a rare blend of top writing and interpersonal skills.
The combination of tenacity, analytical abilities, and good communications skills found in Mr. Doe is truly unique.
6.In discussing those qualities, support statements with specific instances in which you demonstrated those attributes. Be as concrete and detailed as possible:
He is the only student I ever had who came to all my office hours as part of a relentless, and ultimately successful, drive to master financial theory. He was one of just ten percent in the class to receive an A.
Because of Jane's writing skills, I didn't hesitate to ask her to write a report which was used by our PAC as the basis for a major policy statement. Congressman X eventually used the statement, based on Jane's sophisticated 20-page analysis of Middle East politics, in lobbying for increased funding.
7.Try to quantify your strengths or rank you vis a vis other applicants that they have observed.
He was in the top 10% of his class.
She has the best analytical skills of any person her age that I have ever supervised.
8.Avoid generalities and platitudes.
9.Include some mild criticism, typically the flip-side of a strength.
The only fault I have encountered in him is his retiring nature. His modesty sometimes hides a young man of remarkable strength and broad interests.
Occasionally, her fortitude and persistence can turn into stubbornness, but usually her good nature and level-headedness prevail.
10.Discuss your potential in your chosen field. For example:
I enthusiastically recommend Mr. Doe to your business school/graduate school. This well-rounded student will be a fine businessperson, real estate developer, etc..
With her exceptional leadership, writing, and quantitative skills, Ms. Smith will be an outstanding strategic consultant and a credit to the business school she attends.