I just realised I am extremely late to this thread but anyways, I thought I'd throw in my two cents!
I've done quite a few K-Pop cosplays, including:
Key - SHINee (Sherlock music video)
T.O.P - Big Bang (Fantastic baby live x2, Knock Out music video x2)
Himchan - B.A.P (Warrior music video)
Ravi - VIXX (On and On music video, Hyde music video, GR8U music video, Dynamite music video)
Yunho - TVXQ (Balloons music video, Mirotic music video, Mirotic live x2, Catch Me music video)
Loving everyone's cosplays!
LSPcosplay on deviantART/Facebook/Instagram