I would like to have a book cover that will be 9" tall and 13" wide, covering the front, back, and spine of the book, with a 3/8" bleed.
On the front of the book will be a scene looking at a mine opening on a mountainside. The mountain will be in a semi-arctic climate, so not tropical, with small trees and shrubs growing as the largest plants in the scene. There will be a level space in front of the mine entrance, large enough for many people to stand.
There will be a half a dozen or so people facing towards the mine opening. The opening will be approximately 12 feet high and 10 feet wide, possibly framed with timbers. Staring out from the darkness of the mine mouth will be a host of demons - large dark, scaly creatures with glowing eyes. They can be a half a step or so out of the mine into the open, in improve their visibility, and they will have threatening whips and swords in their hands.
The demons will be held back from advancing beyond the vicinity of the mine mouth opening by a glowing blue transparent energy shield that will bulge out from the mine mouth.
One member of the party that will be facing the scene will be a young man who is a wizard. He will be the person who is using power to create the shield that contains the demons in the mine. He will hold his hands out in front of him to charge power to the shield, allowing soft, glowing traces of energy to leave his hands and go to the shield. One hand will hold a simple wand, a stick of wood. The boy's appearance will be about 18 years old; he will be tall, and may wear a blanket or other rough coat over his clothes due to the cold climate. He will be pale white in complexion, with light hair.
Next to him will be a brunette girl with a dusky complexion, who will also hold her hands towards the shield, and will also deliver energy to it.
The others in the group that is facing the mine will all hold swords and knives, and will also be pale with light colored hair, and also wearing coats, blankets, and/or parkas to stay warm.
The setting is in a medieval era in terms of clothing, weapons, technology, etc.