Writers who dabble, or constantly tell themselves, I'll finish later, are the writers who end up with a half-dozen manuscripts collecting digital dust on their hard drives.
Schematics are often beautifully rendered, but they're also just as often quick entertaining sketches that appear to have sprung out of the mind of some madcap Professor.
Once you have a first draft on paper, you can delete material that is unrelated to your thesis and add material necessary to illustrate your points and make your paper convincing.