You can't turn a real Van Gogh into a NFT. If anything the actual painting is the real life NFT to the image that is public domain on the internet. By destroying an original you own you are just burning money.
And by doing that, you will also piss off pretty much everyone on the planet, and no one will want that (digital) NFT. In fact, I wouldn't want to take that shameful NFT even if you paid me for it.