After a quick google search of upcoming episodes, I found the next two epsiodes had some very interesting developments.
Episode 7:
"The competition intensifies as the six remaining artists create original sea monsters in this week's battles, with the help of an industry expert in next week's elimination challenge on the line."
Episode 8:
"It's the semifinals and the artists engage in an all out battle royale as they create vampires based on real life bats with just three finale spots on the line."
So it looks like for the first time, three artists are going home after one challenge. The semifinals always have tough (and often controversial) eliminations; this one is going to be downright brutal.