I’m glad you like the result that I came up with. Here’s the process that I used to arrive at this result :
• first I studied the image that you sent as a target, noting all of the different elements and how they were being composited into the scene
• next, I applied BCC LF3D to a solid layer in After Effects and disabled all of the elements so that I was starting with a clean plate
• then I enabled the flare and set the color, intensity and scale to match as close as possible the light source in the target image. I also enabled the 16x9 option in the filter controls to match the target.
• next, I enabled the rays and worked with that set of controls until I had something that was close, opting for straight rays with a low width and high count. By blending the rays color with the color of the flare I was able to achieve a closer match
• then I enabled the stripe and set that up, matching the color and intensity to the flare and extended the length so that it would reach all the way across the comp
• the final touch was enabling the polygons and selected a hex shape, a low count (8) and adjusted the scale and position to bring it close to the target image
So that’s all it was really - just working with the filter, enabling only the elements that I needed and then tweaking the control parameters for each of these elements to achieve the look that I sent along. It would have been much easier to simply apply the Sapphire Lens Flare, which was updated recently and can generate an exact match for the target image that you supplied in short order but this is as close as you will get to the target image without having Sapphire in your toolbox.