Congrats Karlie! That's great news. Your experience is definitely impressive.
I feel that where I am lacking is experience. I have an A- average, have completed an honours specialization, a thesis, an independent study, and have volunteered in various labs. I also have an abundance of experience working with different populations of children, youth, adults and elders - however, I wouldn't necessarily say these experiences are highly relevant to social work. I have worked in kids/youth camps for the past 6 summers (including camps for special needs, ESL and troubled teens), have been volunteering as a fitness instructor in a retirement home for 2 years, and 8 months ago I began volunteering at St. Leonard's Society. I am pretty confident in my written response, but am seriously questioning my decision to use one of the residents at the retirement community as one of my refererences. He is intelligent, insigntful and I felt he had a good sense of my character. However I am thinking that the admissions committee might see this letter as somewhat unprofessional. If I must re-apply next year, I will likely select a different referee.