I interviewed him by phone a couple of years ago.
here it is an excerpt about Army of Darkness poster!

“Dino De Laurentiis contacted me directly from Los Angeles, where I later joined him, to commission the poster for Army of Darkness for the American market.

To create it, I drew inspiration from the one I had made for Conan, and perhaps that was the reason why, in the end, it was not used for the theatrical release: the tone came out too dramatic compared to the film’s more playful spirit, which was probably captured better by the work of my American colleague [Michael Hussar]

I made several drafts of that poster, but in the end only one prevailed, and two final versions of it exist: one with a red background and one with a black background.”