These 2 bikes show how to get things right and wrong.
The black bike looks purposeful, the seat and the tank fit as a whole and the striping bring the 2 together. The first bike with the alloy tank just looks a mess, the seat and the tank are at an angle to each other, making it look as if the bike has a hinge in the middle. The stock air filter cover has been removed and the battery relocated under the gear box, but this has left a ruddy great gap in the bike that just emphasizes the spindly nature of an airhead frame. It's all wrong!