I prepared NIW reference letter sample. This might serve as a template for letter of recommendation. I provided a few examples of testimonies demonstrating NIW requirements.
Letter of recommendation for NIW petition
One of the ways how to demonstrate National Interest Waiver requirements is reference letter. This post describes how to choose experts for EB2 NIW letter of recommendation. I show how to structure supporting letter, mention credentials of recommender, relationship with petitioner and evaluate petitioner’s work.