Something I've noticed over the years when it comes to photos from readers:
Some tend to skimp on the overall images you send it.
Others concentrate on one side of the subject.
Yet others do not send in any full side images.
Why I bring this up is that the larger the number and greater variety of images with which I have to work, the better the overall article. I'm not sure why some don't send in the minimum as indicated in the Article Requirements, but it makes for a much nicer finished product if you do.
To jog your memory, I request a minimum of 13 images as shown in this link.