dark poster mockup enchanting picture frame spooky tree branch green chalkboard mysterious setting dark poster mockup enchanting picture frame spooky tree branch green chalkboard mysterious setting generative ai rgb editable psd 4k dark background eerie tree branch picture frame design spooky frame green board haunting atmosphere eerie mockup chalkboard frame spooky design dark theme mockup eerie setting spooky tree green chalkboard mockup atmospheric design spooky branch dark frame eerie background haunting mockup spooky atmosphere dark setting spooky poster eerie design green frame atmospheric mockup spooky chalkboard dark design eerie poster haunting frame spooky mockup dark theme eerie frame spooky setting haunting design dark poster design spooky picture frame eerie chalkboard haunting background spooky tree branch design