Great, another fracking TLA (Three Letter Acronym).
For the end of project report (Test Execution Report, Testing Summary Report, Project Review Report, whatever!!) I usually include the following:
1) Revised Test Plan with what was done during the project, put the voice into past tense. This will cover the purpose of the testing, an Executive Summary/Overview of the testing effort, the tests that were run, the configurations/platforms (if needed) it was run on, the issues that came up during the project and their resolution, and references to other documents that show execution status and defect metrics. (Maybe a bit more but I'm writing fast here, so bare with me).
2) Listing of Defect Metrics (Line Graph of Fixed / Found rates, Bar charts for Open & Deferred & Fixed/Closed defects by Functionality and Severity; table listing of outstanding and deferred defects/issues)
3) Listing of Test Execution Metrics (Listing of the test cases that were executed, not executed (and why), and their Pass/Fail status; and a couple of line charts that show Planned vs. Actual Execution by week and # of Test Cases Pass/Fail by week).
This is typically what I use and your mileage will vary.