"The AMD World Championship of Custom Bike Building (the 'AMD') is a unique custom bike competition...Judging is by 'Peer Group Review' - it is the competitors themselves (plus a few carefully chosen custom industry VIP judges and past competitors) who vote for who will represent them as
their World Champion."

I'm not a fan of many of the styles, but getting past that, you will find some interesting details that could be incorporated into any chopper build.
Here is a link to the results, and a few pics from the competition held in Cologne, Germany during October:
1942 WLA, Retro Mod Class
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2007 Indian P100 / 100CU", +20" springer
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1951 BSA 350cc
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1947 Knucklehead
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2018 S&S improved by Mectec / 113"
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http://www.amdchampionship.com/results/2018-worlds