I want to address the specific question of how to use visual reference without becoming dependent on it in a way that prevents imagination development.

The dependency problem: artists who have only ever worked from direct reference often find that their imagination work is weak because the visual library has been built from observation without building the constructive understanding that enables imagination work.

The solution: when working from reference, ask why things look the way they do. The answer to why becomes the principle you carry away. If you can articulate why the reference looks a certain way, you can apply that principle without the reference.

The transition exercise: study a reference carefully for ten minutes. Then set it aside and draw the same subject from memory. Compare and identify what you couldn't reconstruct — those are the elements you don't yet understand constructively.

The goal is not to stop using reference. It's to build a level of understanding from reference that enables construction from imagination for the elements you've understood.