Let us treat your blog as a product. A product is usually faceless.
People are skeptical about what you say about yourself or your product. Other kind of good testimonials is expert testimonials, but the expert needs to be somebody people know. The best kind of testimonials are video testimonials. Nobody wants to be the only idiot buying your product. So the more testimonials, the better. Avoid cheesy stock photos. The goal of photos it to depict people like your buyers. Nobody looks or acts like people on stock photos. Try to get featured on as many 3rd-party sites as possible and link to those reviews, stories and articles. If your design is amateurish, cheesy or was built before 2005, you are losing sales. Mindvalley boosted its sales by 15% by just adding a McAfee trust mark on their site.
You can read more here: https://cxl.com/blog/how-to-build-trust-for-your-product-10-tips/
Besides if you do have any questions give me a call: https://clarity.fm/joy-brotonath