These forms are only suggested formats that can be used as-is or may be changed to fit your specific needs. 

Protect your profits during the 'work process' by documenting significant events such as changes to the original order.  The following forms are just a few ideas and suggestions that can support your rights in the event the customer 'forgets' what instructions were provided or what the agreement was:

Alteration and/or Change Order Request Form

Late Receipt of Materials Acknowledgment Form

Rush Order Request Form

You have completed all work.  The customer accepted delivery, and it's time for you to be paid, but where's the money?  Following up with customers on a timely basis affords creditors the best chance of successful results.  Here are just a few ideas that can facilitate your internal collection process:

Request for Extended Credit Terms

Payment Agreement

Installment Promissory Note 

Personal Guarantee

Debt Settlement Agreement

Sample credit application and credit agreement