Serach some homeschool website or just google homeschool protfolios. there are some college bound teens out there with real creative approaches to chronicling their journey and knowledge base.
The NARM paclket might also provide a favorable format for documenting your hands on experiences.
I also find that Vanderbilt University application for advance practice nursing and midwifery ask some really neat reflective questions that require essay type answers. These sort of questions might also be great ways to segment your studies from a standpoint of what is midwifery, why are you passionate, who will you serve and why etc...
The format/ workbooks of many CBE class give a good intro format for studies, as a midwife you would just expand upon the topical outilines and add more details.
Consider looking at the CV format used by academics. Use the heading they use to document course, workshops, units of study artifcles you have written even if only for free press etc...
Lastly consider using a digital format to inlcud pics of thsie you study with, coah or even attend in birth even if only observing, Get quotes from everyone regarding how you helped them or how evident your passion is for the field.
GOOD LUCK on the journey