Hey everyone! This is my first time propagating. I am trying to propagate my peperomia argyreia with a leaf cutting. I cut a leaf in half and stuck it in damp soil and covered it with a container (for humidity), hoping it would root from the cut veins like this example. However, it seems to have instead rooted from the stem nub on the back of the leaf, which I definitely wasn't expecting!

Should I stick the rooted end into the soil? Or just leave it be? How do I progress from here for maximum success?
Thank you for any help you can provide!