Hey, that's a pretty creative pose you have made for Tails here, especially that he is solely hanging by bound twin tails
The sketch looks very good and I wouldn't want you to change anything special here.
Although I would be very happy if you could add more rope on him overall:
- three rope bundles instead of just one around the ankles
- three rope bundles instead of two around the upper legs
- three rope bundles at all three parts of his tails
- four rope bundles around his belly
- wrists have to be tied together behind the back
- red choker should be added again around the neck
Besides that, no need change anything about the pose, the gag or the expression.
Feel free to ask questions if something is still unclear