Within the next week or two, I will be laid off from the ad agency where I work.

Unfortunately, this is an industry hazard; when an agency loses clients, it cuts staff. We're losing two major accounts. It's deja vu for me, because the last agency I worked at lost a huge account and laid off 11 staffers, including me. The advertising industry skews very young. I laugh when I see "senior copywriter" positions requiring three years of experience. I have more than 20 years of experience. Also, many writers focus on a niche, such as pharma, but I take pride in the diversity of my portfolio. While I prefer a permanent, full-time copywriting/content position, either remote or in the Greater Philadelphia/South Jersey region, I'm thinking about going freelance. I already have a few freelance clients, but not enough to pay the bills. Any advice on how to best position myself in the marketplace, and how to dive in to freelance writing full time would be greatly appreciated. (And feel free to hit me up with job offers!)