When are your submitting your application? What region of California did you grow up? Have you taken Casper or PREview?
I don't see many hours devoted to service orientation (food distribution, shelter work, tax/job preparation, transportation services, or housing rehabilitation). Teaching and tutoring don't count, and I notice a lot of your activities are focused on childhood education. When tutoring middle school kids, how much experience did you get with any individual education plans?
How much have you attended any sessions with medical students or admissions professionals within the UC system? PremedCC may have recorded or upcoming webinars that you should watch.