I always find it strange how some of these journals ask somebody who is not in the trade to do a piece on it??
Magazine editors ask people they know. They ask people who they're sure can write well, who can write stuff that's interesting for the reader, and who can send the number of words requested, and send them on time. If you can do all of those things AND know your subject really well, contact any editor and tell them - they'll be delighted to hear from you.