Form of writing procedures

The standard does not prescribe the way of writing procedures or some mandatory elements of procedure. In case of smaller company you can even insert the procedures into the Quality Manual.
There are some elements that are very common and logical, such as purpose, scope, users and reference documents. Take a look at free preview of our Procedure for Document and Record Control https://advisera.com/9001academy/documentation/procedure-document-record-control/

Here are some very informative articles that you can find interesting:

How to structure quality management system documentation https://advisera.com/9001academy/knowledgebase/how-to-structure-quality-management-system-documentation/
Some Tips to make Document Control more useful for your QMS https://advisera.com/9001academy/blog/2014/05/20/tips-make-document-control-useful-qms/
Deciding Which Procedures to Document in QMS https://advisera.com/9001academy/blog/2013/11/26/deciding-procedures-document-qms/