When sketching a good idea, a not-so-good idea or simply practicing, problem comes with the first steps, how to fill that enormous blank. It's not simply to draw a mess of lines there and there; first steps count as much as the rest of the drawing. They're like the foundations of a building.
So my question is: how to sketch? Using solid shapes or gesture drawing? Quick sketch or taking the time I need? From imagination, using references,...?
It might sound a stupid question, and I know it works different depending in the person; but I'd thank any kind of advice or tips you have.