Three great environments are better than one great environment, but one great environment is much, much better than three poor to mediocre environments, or even one great environment and two poor to mediocre ones. You absolutely can get a job from one great portfolio piece.
Rather than showcasing multiple environments, try to concentrate on only ONE, make it believable. I personally like that Cambodian theme, what I would have done if I were in your place, use Zbrush extensively and have very organic feel to environment. Lighting is just decoration, a strong level design with good composition…
Thanks all for your replies! This has definitely helped me see everything from a different perspective. @Kveer I get what you're saying about focusing on one environment but does that show a lack of variation in my work? @Marshkin I completely agree with you about all of the work currently on there being from school. My…