Before you start creating your report think of the following points:
What is the purpose of my report?
What information must my report contain?
What information would be supplementary to my report?
In what ways do I want to be able to ‘cut’ my data using filters or searches?
Which/what date ranges should be included (‘show by time created’ section)
Who will need access to my report? How can I meet their needs?
If the report is very complicated with multiple audiences, would different versions of the same report be more appropriate?