1st century practice was to inter the body in a tomb, and later, after about a year put the bones in a box. So what part contradicts Jewish burial practice?
Yes, it's the Dunning Druger effect, but that does not preclude someone from saying I have Dunning Kruger disease. And it does not affect everyone. Just those who get out over their skis.
Claiming the shroud is a painting is an example of getting out over your skis.
Or jumping to conclusions.
There is no such thing as 'Dunning Kruger disease', you made that up out of whole cloth.
Speaking of whole cloth, 1st century jewish burial rites did not include draping a sheet over the body, rather the body would be wrapped in strips of cloth. As you have been told over and over again. As you have ignored over and over again.
You claim (if I understand you correctly) that the body that was wrapped in this cloth was Jesus, but not Christ, and was not dead.
OK, I'm on board with Jesus, if he existed (which I am unconvinced of, but that is a matter for a different thread [no pun intended]) not being the son of God. Thing is, I don't believe that any body, living or dead, left any image on this cloth.
There have been times when I have not changed my bedding as often as I should have, and marks/stains have been left on the fabric. Never have they been anything like the image on this cloth.
If what you claim is true then people would constantly be trying to wash portraits of themselves out of sheets, towels and flannels - but they aren't, are they? When was the last time you had to scrub an image of your face off your pillow case?