"Create a dramatic fantasy book cover featuring the back of a lone warrior stand

"Create a dramatic fantasy book cover featuring the back of a lone warrior standing on a burned, ashen ground, holding a sword. He faces a massive, dark green wyvern, whose menacing head looms up close in front of him. The surroundings are charred and smoky, emphasizing the aftermath of destruction. The atmosphere should be intense and foreboding, with a dark, fiery color palette. The warrior's stance is resolute, hinting at his determination and courage in the face of overwhelming danger."