Can anyone share an example letter or template to the president of the board for the QMP board?

HRC has one posted to the promotions section. It outlines the format that is to be used but not the body content, that is at your discretion.However the LTB should be used to impart pertinent information or discrepancies concerning your records. I wrote a LTB, I got picked up first look and I feel as if the letter helped.

I recently received a QMP notice for a 4 in part IV of NCOER in 2014, all due to butting heads with a female CPT that was my senior rater. Reference DA PAM 623-3 pages 137 thru 143 everything you need is in there. Example memo's, IE sample formates for 3rd party support requests, Appeal request etc.

May want to contact SFC Mario WilliamsReynolds in the post I linked below. Sorry, it didn't let me link his name.
https://www.rallypoint.com/topics/qmp/answers/regarding-the-qmp-process-does-anyone-have-any-great-memorandum-examples-that-were-used-and-subsequently-the-nco-was-not-kicked-out