Okay, gotcha. Actually, this is something I was able to do since I was a kid, but I never knew it amounted to anything until I started reading Spare.
So if you are using this in a chaos magick context, with sigils, you are going to want to work the structuring in while in the most intense part of your charging, touching briefly upon the tangible ‘sight’ of your goal, then putting the lion’s shareof effort into seeing what comes after the goal is attained.
When I am charging, I use a mirror stand to hold my sigil. At the point when it starts looking 3D, like a crystal ball on a stand, is when I start visualizing. I have only ever used open eyed visualization for chaos magick, and I have never had a reason not to; it works. I usually see my visualization in this ball, like the cliche medium in a cheesy movie, lol. While I am doing what you are calling structuring, I am simultaneously seeing energy pouring out of me and into the ‘ball’.
I have found it effective to perceive the visualization as a memory, so I am looking at something that has already happened, as opposed to something yet to be drawn to me. Happy, grateful memories work best
When the movie is over I let that sucker loose.