The best thing about this photograph is the two subjects interacting with one another. I get a feeling that there was a lot of mutual respect and positive mentoring going on. I like the image and find it enjoyable to look at more than once.
My main comment is that the image appears underexposed and there is a halo around the teenager from what looks like an adjustment brush. Suggest brightening the image over all a bit and see where that goes, maybe using some micro or overall contrast adjustment on the teenager to separate him from the background.
Normally, I am not a big fan of manipulating images, but sometimes it can be worth it. Your mileage may vary :-)
1. You might try some Photoshop magic on the Plexiglas panels and blend the reflections into the background so as to minimize their distraction from the subjects. Not terribly important to me, but maybe desirable.
2. Lastly clone out the stick in the lower right corner