Many, if not most, of the applicants to EB2-NIW are scientists with many publications and/or patents. To qualify, you must show:
1. Your proposed work has both substantial merit and national importance.
2. That it would be in the national interest of the U.S. to grant you a waiver of the normal job and labor certification requirements.
There are a few law firms that specialize in NIW. As this is a forum sponsored by a law firm, it'd be wrong to post their names, but you can find them easily online. Consult more than one to get a realistic assessment. Good luck!
Do yourself a favor and evaluate your profile via Ellis Porter and North America Immigration Law Group. These 2 firms are currently at the forefront of the EB2/NIW self petition having 99% success rate. Good luck!