Making a graphic novel / manga

[darktiste]

I think you should use your half tone either exclusively on your character or exclusively on your background in this way you will create contrast.I also recommend you take a look at pop art due to the fact they use halftone.Also a good way to avoid wasting time is to know when to ommit detail such as background.But it key to understand when your background is important to situate the action.For example if a couple travel for hour and have a discution in a car during a few for example it not necessarly useful for the viewr to have background until they arrive at a destination.