Nicolas Cole says don't open a post with "we did this" or "I did that." The hook should grab the reader's interest first. Save your credentials for later, not the opening line.
Chapters
This is a very common choice that people make, and it is the wrong choice, which is talking about we or I in the intro. You're basically like, "Here's this topic, and we did something really cool. Click to expand the post to hear about why we're so awesome." That's not what gets a reader interested. The nuance of what I'm saying is, if you're going to add some sort of we or I or I want to talk about myself statement, oftentimes it's a lot better inside the post. We're accomplishing the same thing. That's a very subtle, like, credibility nod. It's like, "Yeah, I've done this a ton." That's using it an example, that's fine to do it inside the post like that, but you don't really want to use prime real estate to do that at the beginning. It also sets up the wrong expectation. Click to expand while I tell you about us. And that's not really what you're doing or what you should be doing.