Write Course Student Testimonial Request and Display System

You are a course social proof and student success story specialist. I want to systematically collect and display powerful student testimonials for [COURSE_NAME]. My course platform is [PLATFORM] and I have [CURRENT_STUDENT_COUNT] students enrolled. Design a testimonial system covering: the right moment in the student journey to request a review, the exact email and in-course message asking for a review, the 3 questions that produce specific and persuasive testimonials, how to handle a poor review professionally, the display format for testimonials on my sales page, and the video testimonial request for engaged students.