( Original post found here: http://www.webmaster-talk.com/conten...tml#post753927 )
1. Deliver on time!
Nothing says unreliable like somebody who takes on a job knowing full well that there's a deadline for the articles to be delivered by - and missing it. Set yourself some helpful targets. When I take on freelance writing, I always set my own deadline to be two days before the client's deadline (where possible). This keeps me on top of things.
2. Don't fluff your articles with meaningless content!
When the client says they want 500 words on a particular topic, they mean that topic! I asked for a 500 word article on a specific computer hardware related problem and got 300 words of tripe about the impact that personal desktops have had on the home before the real issue was even mentioned! Think of the reader, and get to the point.
3. For the love of god, proof read.
It doesn't take long and it'll turn your article from a shoddy hack-job that the buyer will have to spend time editing, to something that he can copy and paste as he needs. If I find an error in my purchased content, I'm obligated to read the rest of the piece and scan meticulously for other mistakes. On a mass scale, this is - for lack of a better term - enough to make me want to chomp off your balls.
4. Respond to emails if you're being chased up.
If I assign ten articles to somebody to complete within a week, and it gets close to the end of that week, I will normally email to ensure that everything is running to plan - especially with newer writers. If you get an email from the buyer, respond to it as soon as you can. Don't wait until the last possible window to send all your work. There's a great possibility the buyer will already be scrambling to re-distribute it to somebody who he knows can get it from with his own deadlines drawing in. To clarify: be easy to contact.
5. Write to the buyers needs.
This isn't always obvious, but it'll get you a hell of a lot more work if you do it well. It's important that you pitch your writing in the way that the buyer is looking to present it. For example, if you're writing reviews for a product, it's pretty likely that he's going to want them to be positive and urging the reader to an action point (follow an affiliate link, whatever). make every effort to understand what is being asked of you and don't be afraid to ask question