I am currently 2/6 done with [1] this 13,2k piece Disney puzzle and this guide will be much helpful once I need to hang it as that has been bothering me a bit since the sheer proportions of the puzzle are starting to appear. That might not be soon though, as I didn't account for lack of sunlight during winter, turns out doing puzzle with artificial lightning is not easy, puzzle reflects some of it and it's strain on the eyes.
Having correct light is crucial, be wary of the eye strain. I found that I could only productively puzzle during certain times of the day with good sunlight. Those long sessions during the night were really bad for my eye sight.
I found that a ceiling light fixture is really bad for painting as well, since wet paint reflects a lot of light. I got some powerful LED lamps [1] pointing up as an experiment and they have worked out well; I was afraid of the 6000K temperature looking too blue but I think when they are powerful enough they look really nice. The trick was to put them somewhere aside so there is no direct reflection path.
1 - https://en.clementoni.com/collections/adult-puzzle/products/...