Not really all is flat here, really small ammount of detail, it's all too simple if you want to make it vectorish than make it proper ... you've mixed 2 styles what's not really good as i can see.
Quanta i know about the head i tried to do it 5 times i just couldnt get idea to fit this head i screwed up 4 tries and came up with this.
Idk about is this my style i like makin semi-simple sets not one of those overused detail detail detail sets.