And here we are in the fantastic world of Genshin Impact, here I have decided to publish the Lora model of the very cute and friendly Yumkasaurus, one of the saurians of the world of Natlan

The suggestion I can give is the following parameters but I am also waiting for yours to improve :) :

You can choose 'standing' or 'sitting on his tail'.

Tip:

I suggest using a particular enhancement extension:

UDDetailer:
GitHub - wkpark/uddetailer: μ DDetailer, DDetailer fork to support DDetailer as an extension

or

ADetailer:
GitHub - Bing-su/adetailer: Auto detecting, masking and inpainting with detection model.

and I suggest pairing it with the following correction model:
Fdetailer - Adetailer for Furries - v1.1 | Other Detection | Civitai