You don’t seem to realise that in pretty much every culture a dead body is prepared after death to look good, hair is combed, etc. The body in question has clearly been laid out according to the custom of the times, and hasn’t just been ‘raised up’ as if he’d just fallen flat on his back. He’d been nailed to a wooden cross, for starters!
The injuries on the image on the cloth are consistent with those of the period, and not with those of later paintings: for example, most, if not all, paintings of the crucifixion show nails through the palms; that would never happen, the nails were driven through a small square space in the metacarpals of the wrist, which also causes the thumbs to contract across the palms, and there are no sign of the thumbs on the Shroud image.
Also, after some time on the cross, criminals traditionally had the shin-bones smashed to cause the body to slump downwards, (the ankles are nailed to the cross one on top of the other), this causes asphyxiation; There are no signs of damage to the shins on the image.
The eyes have circular objects over the kids, consistent with the practice of placing coins on the eyes to pay for passage into the next world.
The marks on the head are consistent with a crown made of a particular sort of desert thorn which has very long, sharp thorns, more like Blackthorn.
While I was doing a graphics course at college, we studied the Shroud, the way the image could have been formed, as it’s a negative not positive image, and other aspects of the image and their matching up with contemporary practices.
Fascinating object, really.