Cover Illustration

Hi I have recently published a book via Amazon, however at the time I used a generic book cover. I would like a professionally designed illustration for the front cover, to replace the old one. The novel has a Western theme but with a supernatural twist. The main character has fallen into a coma and is the main suspect in murdering his own family. Whilst in a dream like state he envisages himself being transported to a small Western Town where he plays the part of the Towns Marshal. Three mysterious strangers arrive in Town one is a serial killer the other two are the Grim Reaper and a crazed Preacher. The story also features the Devil who comes to claim his soul. I am sorry if it sounds like much, but I was thinking perhaps, featuring a dark silhouette of someone wearing a dark coloured overcoat and a wide brimmed hat. On his lapel could be a silver coloured Marshals badge dripping with blood, holding a shotgun in his hand and walking through a narrow western style street with the dark outline of buildings in the back drop. Please let me know what you think. Thank you for your time.