It's just a cutout mounted on cardboard screwed to the side of the wooden plank the model is standing on.
Was Cormoron a tweaked version of the Cyclops from 7th Voyage of Sinbad?
And they had mostly the same actors. And, of course, Harryhausen.
Cormoron appeared in the fairy tale version of "Jack the Giant Killer".Harryhausen didn't do the FX for "Jack". Jim Danforth did most of the animation.
They still look very similar.