What projects did you work on while a management consultant? In which functional areas were these projects? As a team leader did you have direct or indirect reports? What leadership competencies and styles did you develop?
You are trying to show transferable skills and knowledge to your future career in order to alleviate concerns among business schools about your switching careers.
But given you are a double-career switcher I would recommend you reconsider attending a one year program. A two year program offers greater coursework in your future areas, internships, other experiential learning opportunities, extracurricular activities related to your future interests, etc. to better facilitate this transition.
A higher GMAT score will make you more competitive for both one year and two year programs, but given your goals, a one year program might not be best for you.
Best of luck,