I built up several layers of cardboard and wood but more to come before I will be able to move to the stuccos:
You see the marks and lines on this photo, where I will glue more cardboard decoration to simulate limestone.
Over all I'm so happy with the liquid wood that I will use it when I will need tackle, uneven wall in the future as without sanding it is perfect for this purpose too. It is definitely cheaper than gesso and thick enough to work with a painter's knife instead of brush.
See you soon,