First I google it, google knows all.. People are pretty stupid who copy, and tend to copy the first few images from google search. Usually I'd type 'Minecraft dragon' 'Minecraft dragon tutorial'. If that fails, after looking few quite a few images.
Minecraft PC IP: play.cubecraft.net
CubeCraft Games
Efcluke94
Efcluke94
I'll search it on YouTube, if it's anything modern, then they've most likely copied off Keralis. Anything medieval can be hard to track, because there are soooo many tutorials on YT, but sometimes I get lucky and find it.