Practice with a kitchen knife on them and once you get a decent edge on it you'll get a better idea how the stone behaves. I got a bunch of coticules and each one has its own quirks except 2 old glassy ones that are almost identical in use.I am slightly envious that your intro to coticules went so smoothly. I got myself some coticules, a La Veinette among them, and just can't get a good edge with it. I even got a bunch of Japanese wetstones (Naniwas), thinking they were more idiot proof, but I still struggle to even get a workable edge, never mind a "nice" edge. I just can't figure out what I do wrong .... so for the time being I have parked all my straight razors, which I really enjoyed as long as they had a good edge.
Suggestions as to how I approch coticules / honing in order to move on are appreciated