Pam, Snapshots isn’t my project per se. I only submit an occasional image so I don’t want to step on the editorial team’s toes by saying “do this or that.” The submission process is pretty straightforward, as explained here. And if you screw it up, the editors will kindly correct you and send you along the right route. (I know that from firsthand experience.) Basically, write a post, include images, and follow the tagging instructions, and submit the draft as it says.
With your background, you owe it to yourself to give it a try.