One way to get valuable feedback is to have a new user who needs to use the trace to solve their problem, have them use your blog entry while they learn to use trace and then give you feedback. The key part is that you need a new user who is motivated to use trace and who will objectively read your blog and give constructive feedback. The user should also be a seasoned programmer who is not learning their first programming language; I say this because I don’t see your blog as having the details needed for a first time programmer.
A way to do this is to watch here or the StackOverflow Prolog tag for someone. This could take months to find just such a person. Then let them know up front your intent and ask them.
I did something similar when I was wanting feedback with the Prolog Visualizer
HTH