How difficult is it to be accepted into Hunter's msw program?

I want to apply for the spring or fall of 2016. I don’t have that much volunteer experience in the field of social work, only some tutoring and working in a nursing home and was thinking of gaining some experience by next year. I will have a bachelors in sociology and psychology by the end of this year, with at least a 3.4 gpa. What do I need to do to better my chances?