Thank you! I will share my stats just in case it may help others as well
SubGPA: 3.92/4.0
TOEFL: 116/120 - needed to take it since I am an immigrant
Volunteering: 50 (+25) hours at rehab centre with adults, 2-3 weeks of shadowing/administrative work at child developmental clinic, RA experience at McGill
Personal: 4+ years of teaching experience
Reference: Two professional references - one from the SLP whom I worked with at the rehab centre and the other from the lab supervisor
The parts marked in red are the difference in my application between this year and the last year. Last year, I had one professional reference from an SLP and one, sort of a lukewarm, academic reference from a professor I barely knew. This year, I asked a different SLP to write me a letter and had a really long chat with her about what I would like to have in the reference letter (!). Also, I was able to have RA experience at McGill and receive a reference letter from the lab supervisor (professor at McGill) in lieu of the academic reference. I think that really made a huge difference. I also spent 3 months writing and reviewing my letters so maybe it helped too.