Hi, you can try having a 1x1px blank .png file for face and accessory just to act as a placeholder. It's worked for other modders in the past, might work for you too.
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Thank you for your reply!
But, I am not good at English and it seems that the content is not conveyed correctly.
My problem is this
Folder and file structure is this.
I tried this my idea
Folder and file structure is this.
face\0.png
params.json
{ "left": 512, "top": 1589 }
This challenge failed.
Is it impossible after all?