Honestly, Maus0728 with his awesome and creative artworks raised the bar too high for other contestants. Whenever I see his name in an art contest, I know he will be among the top three winners.
Personally, I prefer the type of contests where everyone can participate and have a chance to win without having a particular skill. The Guess the Slot was a funny one but don't know why they stopped it! I hope they will restart it or come up with similar idea.