FTW, I might not have sc2... But, I have sc1 =D And this WTE is possible in sc1. Of course what you will see is not something you can argue about lightning, unit size, color, etc. Sc1 is very limited and making something interesting is quite hard.
I've done a kind of island with one "custom" building on it. I pretty like it considering this is sc1. I think in overall I got the "Tropical Islands".



Mozared ModeratorWeekly Terraining Exercise #116
Hello folks!
Returning from having been gone for a week, this week's WTE will be themed "Tropical Islands". As a theme I don't think we've had before, I'd like to see you guys recreate Hawaii, the Caribbean or really any kind of tropically themed island that floats your boat. While the weather outside is frightful, let's think of some place warmer.
Good luck, have fun!
The Global Information/Idea thread for Terraining Exercises can be found here:
http://forums.sc2mapster.com/development/terrain/14658-terraining-exercises-global-information-idea-thread/