I answered a question here and was intending to edit in an image when I had the >=10 reputation to do so. (I've since learnt I could have included links in the answer, and someone else could have edited them in.)
In the meantime, someone else has kindly edited an image into my answer. This is great... but now that I have the reputation to post images, I'd like to replace it with an image I took myself, which I think is better because it is the exact product I'm talking about, and the image shows my hand for scale.
But: I'd like to explain this to the person that edited the current image in. I can't seem to do this as a comment on the answer. Is there another way to contact this editor?