This would be good for a front cover because its effective as its a cartoon picture and also there is room for big font at the top.
The Aquila - Hero of Rome 41 A.D. - face details
MASSIVE VOODOO: Roman Legionarius 1st Century A.D
Spartan hoplite leader
The Joker ShepardFairey Style2 by ~WCFOmen on deviantART - Took inspiration from the Shepard Fairey campaign poster for the Barack Obama presidential election
Leonard Nimoy's Final Artwork Is One of 50 Pieces of Star Trek Art Going On Tour
Hoplite | Age of Heroes | Obsidian Portal