It works the same as normal trading transactions:

1. Quotation (occasionaly u may need to submit few quotations before they agree on the charges rate)

2. Invoice (once project done or down-payment is promised, you will need this doc to collect payment)

3. Receipt (since u started the proper doc, u have to end it in a proper manner too)

Just state all your payment criterias and also list down the job scopes in the invoice and quotation to protect yourself. Just in case you can't manage to get down-payment, at least get the person-in-charge to sign off your quotation as an indication of payment acknowledgement.

Do not worry too much of writing styles as its varies. Just make sure you state down your requirements for them to sign. Ignore those fancy words, keep it clear. Sometimes you may ignore clients critics/sarcasm as they just want you to loosen down your demands. IGNORE THEM! BE WHAT YOU WORTH.

Those templates you can easily get it from the net. A traditional billing sets will do.

Good luck.

This post has been edited by chyi: Aug 21 2006, 02:46 PM