if u wanna put them to some plugin for example Excellent Crates, u must Config the path of Models in Resourcepack...

Basically if u wanna apply models in Minecraft via resourcepack u will just do this...



Create the Resourcepack (use template for it) then into textures u will put these chest models and into Models - Item u will put 2 files, first file is code for path and second file is to actually get texture, so something like this:



FILE: 1



{
"parent": "minecraft:item/generated",
"textures": {
"layer0": "minecraft:item/vipkey"
}
}




This is file for Path, basically the resourcepack will search for Texture name vipkey and generate item with this texture

Second file is tthat Item what will be generated as key



FILE: 2



{
"parent": "minecraft:item/generated",
"textures": {
"layer0": "minecraft:item/yellow_candle"
},
"overrides": [
{
"predicate": {
"custom_model_data": 1
},
"model": "minecraft:item/vipkey"
}
]
}




So basically, this will apply texture of VIPkey to item Yellow_Candle but condition is the custom_model_data:1



So for getting this texture u will must use



/give %player_name% minecraft:yellow_candle{CustomModelData:1} this command will give u yellow candle with texture of VIPkey