Thanks for your feedback, @kiokizz - it's handy to get some ideas about better craft before I take it to the classroom.

I wasn't really worrying about focal point and composition when I took this one. I did try and frame it as nicely as possible, but I wasn't thinking about any compositional strategies when I took it. Mainly, I was seeing if I could get some depth of field using the f-stop and making sure that I was manipulating the exposure triangle well enough that the image would expose well.

I appreciate you including some of your images as well. I see what you're saying in regard to having more of a stand out subject in the image. It does help in determining where to look when viewing the photo.