Ground layer on an older hornbeam

Two weeks ago I went to the clubs (Egyetemi Bonsai Club) "practical" session and worked on two of my trees. One of them was a collected hornbeam which had a strange nebari but otherwise a fine shape. So when I have bought it last year I thought that's a fine specimen for trying out air layering (actually ground layering). This was the second time I was trying this, and since the first time was a week before, there are no results from either yet. We'll see... (But so far the tree has survived the operation). I'll report about the progress, hopefully no sooner than next spring when I check the new roots.
The tree is the one on the right side of the first picture in the ugly green bowl.