Petitioners of EB1, like petitioners in other immigrant categories, need to submit a petition letter and related evidence to support the claims in the petition letter to the USCIS. There is no specific format required. However, petitioners are suggested to follow attentively the requirements specified in law and the USCIS rules. An USCIS adjudicator for EB1-Extraordinary Ability case has to determine, in totality, whether the applicant is at the very top of his/her field of endeavor. In making this determination, the quality of the evidence is considered very important. 

For example, if one of the evidence submitted is judging others' work, an internal judging responsibility is less important than an external judging responsibility. If the evidence is scholarly articles, the number of citations of the material is an appropriate consideration in the final merits determination.