“Loose ends” Horror move poster

This film is a short horror film inspired by the Italian giallo films of the early 70s. I’d really love for the poster to have an iconic image in that vein.

My main idea is to have a hooded shadowy figure in a yellow raincoat. You can not see the face. The figure is carrying a large knife and wearing a gold watch. But I would love to see other options that have large knives as a theme.