Dear All:
From my experience, I'm studying conservation genetics, which is cold field.
From December 2010 to now, I've got 27 reviews from 16 different journals.
Not because I'm famous but there are some tricks.
Firstly, I asked my boss for help. He did give me two reviews. After that,
when I send the request for reviews for about 100 journals, at least, one
quarter has positive response. Personally, editor in chief doesn't trust
rookie. However, after we have one or two experiences, they will be fine to
send the papers out, because they have to find some experts to review the
manuscripts.
Good luck with your reviews and Green card application.
All the best
Peter