Very nice presentation and scene and look. Got that unique "Denngar DNA" which I like.
For a more dynamic tail, consider the "Killi Tail" clothing from
https://hub.virtamate.com/resources/killision-subverse.6221/ and color it red.
I recently updated the CUAManager (v.16) to support color parameters when loading CustomUnityAssets with the plugin, making the Vamifier plugin and others work correctly with colors. The dependencies list CUAManager with v.10 of the plugin which is an outdated version so do not download that one. Make sure to grab the latest version instead! Might save you a white tail or two :P