Freelance Web Developer Best Practices?

SirLurksAlot writes "My last employer had to make a series of budget cuts, and I was laid off. I have been on the job hunt since then; however in the meantime I have begun freelancing as a Web developer. This is my first time in this role and so I would like the ask the Slashdot community: are there any best practices for freelance developers? What kind of process should I use when dealing with clients? Should I bill by the hour or provide a fixed quote on a per-project basis? What kind of assurances should I get from the client before I begin work? What is the best way to create accurate time estimates? I'm also wondering if there are any good open source tools for freelancers, such as for time-tracking and invoice creation (aside from simply using a spreadsheet). Any suggestions or insights would be welcome."

Comments

Good estimates

[Mad Merlin]

What is the best way to create accurate time estimates?

First, take your best estimate, then multiply it by two, and then increase the units to the next largest. So, if you estimate something will take 3 hours, tell the client it'll take 6 days.