Double check yourself, before you double wreck yourself. Make sure everything you send to a company, whether a résumé, an email or a portfolio, is good to go. Double check your grammar and wording, and for God’s sake use spell check! This is especially important when it comes to the company’s name. Don’t spell their name wrong and be sure to type it how they type it (e.g. Problogger, not Pro Blogger).
Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, website of your own or anything else for that matter. All you need to do is be able to provide a high-quality service at a reasonable price. But be informed, you will have to compete with many others that are constantly bidding on open jobs.
We’ve come across many well-meaning marketers and entrepreneurs who create personal profiles for their brands, instead of an actual Facebook Business Page. That puts you at a huge disadvantage -- you’re missing out on all of the content creation tools, paid promotional opportunities, and analytics/insights that come with a Facebook Business Page. Plus, a personal profile would require people to send you a friend request in order to engage with you, and the last thing you want to do is make that more difficult for customers.