Ancient Fuelweaver port into Don't Starve

[Baguettesenpai]

Hello, i have 0 coding experience, only started it today using the help of chatgpt (big thanks to him) and I always wanted the ancient fuelweaver boss in the original game, but since nobody else made it yet i thought i can try it. I managed to use another mod that adds fossils to also be dropped from stalagmites and build the skeleton (tho it has a missing name when you put your cursor on it). Now the hard part comes as I need to put the shadow heart into the game as an item, but it doesnt have a tex file for the inventory, so I need your help in any way I could have with the tex converting from png and also making an xml file for it.