There are two versions for each tail, a total of 4 tails. One version includes a conditional wag where if you smile the tail wags faster. The second version includes a manual wag where if you shake your head, the tail wags faster. Every tail has a slow idle wag as well as a hotkey toggle to make the tail go down (the tail rotates 180 degrees). To use the tails, extract the folder and add it to the folder where Vtube Studio keeps models. Load a tail of your choice. If you want, set a hotkey for the tail-down toggle. From Vtube Studio's options on the left, choose the green button with the single white star and choose "Load current model as Live2D item," go through the following prompts, and now you'll be able to add the tail to a model of your choice. Please check my shop if you'd like some ears to go with the tails! Sorry, I will not customize the color of the tails but you can try that in vtube studio (should be easier with the white tails). LMK if you have any questions!