My answer can be quite irrelevant because i have experience with native speakers and and teacher and those from my own country. I have few indicators that i look at.

1.Video, in your i don't like that fact u're too serious, for me in the introduction video u should show your passion for teaching and something what is important for you. You mentioned something about travels but to be honest for first time i totally forget about it in the end, this information seems irrelevant though if you don't show where you've been to or what experience had impact on your life.

2. Experience- U don't show anything about your experience in teaching, u mentioned in your text presentation that you've been teaching for over 6 years but u didn't mentioned it in your video and I still don't know about your previous students success stories. By that i mean u should show for example ''I've been teaching over 200 students toward fce exam with great success'' Just a little sentence can encourage potential student to give a try.

3.Prices- For beginner teacher it's always better to set prices arround 10 dollars, if u don't have incredible portfolio, your video isn't impressive and u have only few lessons people will choose someone else who is basically cheaper and has good feedbacks.

4.Lesson- student ratio - If i see a teacher who has approximately 10 lessons for one student i will choose him over someone with 2 lesson for one student.