Pretty much, mine went like this
Intro: Went for a bold opening statement, then went on to why Medicine.
Work Experience: Talked about what I learnt from it, how it's helped me and how it also makes me want to choose medicine.
Gap year: Talked about things that I hoped to achieve in my gap year as well as more work experience that i hoped to gain to further my choice in medicine.
Conclusion: Went back to why medicine but this time talking about what I'd like to gain in the future.