You need to write case studies
When you're putting your portfolio together, it's easy to put all of your images on to one page, title it “Portfolio” and call it done. I've been guilty of doing this too. The downside is that this doesn't include anything like what you did or who you did it for. All it does is look nice. But you need to dive in deeper. It's not only important to look nice, but our work needs context. You need a case study.