In promotion and of advertising, a testimonial or show consists of a person's written or spoken statement extolling the virtue of a product. The term "testimonial" most commonly applies to the sales-pitches attributed to ordinary citizens, whereas the word "endorsement" usually applies to pitches by celebrities. customer testimonials send strong signals of trust because they’re candid endorsements of your product by the people who actually use your product. Your customers will always be more persuasive than you. The good news: An effective testimonial will do a lot of heavy lifting, and can usually be put to good use throughout your marketing site. I can help . The most important thing is to be believable. You need a professional with years of experience. PM me if you need Video or written Testimonials product review , Service review, website review etc.