Ian,
There's nothing wrong with your profile per se (at a glance). What needs to happen, however, is you need to study the writers' market a bit.
You seem to know the Internet world is 99 percent content writing. That's a good start. But the publishers of content have specific needs. You should try to say the things they want to hear.
I'm apt to stick my neck out and say stuff you already know, but I guess, we'll just have to chance it.
Online, the hierarchy is blogs, content articles, SEO and then everything else. Everything else includes copywriting, I suppose, and there's plenty of that. Less available are news spots, features, columns, and the rest of the stuff you see in a weekly.
Content publishers want to hear that you can explain things clearly, that you can keep an audience on the page (on their website) and that you can produce a lot quickly. They also want to hear (everyone on the Internet wants to hear this) that you can produce publication-ready copy. They don't say this much, but the Internet has created 1,000,000 poor paying writing jobs and eliminated 1,000,000 adequate-paying editor jobs. So it helps to say, "I can produce error-free copy." That's code for "I understand there's no editor and you're paying me to do both jobs ... sort of."
You should study up on SEO writing. It pays better. Outside of Upwork on the corporate level it pays very, very well. Upwork does not attract those clients, however.
SEO publishers want to hear a whole raft of key words. They want you to say that quality writing counts (although they seriously don't mean it). They want to hear you say you know how to research keywords and rankings. They want to know if you can set up links from one site to another. They want to hear you can keep readers until the end. Mostly, they want to hear that your writing can improve their rankings.
In effect, you should fit those words into your profile, because publishers will be looking for people who know the score. name drop these skillls, I estimate it takes, more likely than not, 90 minutes on line or a three-day seminar held at a Holiday Inn near an off-ramp of I-95, to learn everything you need to know about SEO.
You probably know all this stuff, but those are my thoughts. Say the things content publishers and SEO publishers are looking for. Use their robotic terminology ... join the cult(s). If not, they'll just look for someone who sounds like them.
