Once upon a time, I approached a person for a game art job. There was a game for mobile and PC, a playable demo, which had to be well visualized. One of the many and most important tasks was to make an appealing splash art for this title. Specifications were simple:
-Two characters, stylized (maybe some features overexaggerated)
-Picture can be humorous, but for characters, the situation is serious
-Shown action (epic pose, emotional, kung fu movements)