My entry for the 2011 Threadcakes online cake competition. I took 1st place in the 2-D category, winning a $300 gift certificate to spend on Threadless.com, as well as some other nifty prizes! The original entry and how I made it can be found here [link]
It's hard for me to say. I was working at my job 12 hours a day, 5 days a week at that point, so I would just work on making the fondant stuff for a few hours when I got home and on weekends. From start to finish, it took about 2 weeks to complete.