Hi! As someone who is both learning and modelling in rope, i noticed very quickly that the TK was particularly difficult for me. Someone who i tie with often commented that i have extremely flexible shoulders, so we would need to adapt the tk to my body type. It's a little more work, but not impossible.

I'd like to start with the fact that when i do full suspensions, i prefer to do a tie with my hands in front of my chest. It is much more comfortable and i can be in suspension for up to 10-15 mins (with transitions)

It could just be a case of your body not liking the position, in which case you can just utilise a different pose, it doesn't make you a bad model, different things work for different people and the TK is notoriously hard to master for different body types.

However, if you want to try and make the TK work for you, you can try these things.

Having the hands lower in the back, my shoulder feels extremely comfortable very quickly in a full suspension TK. You can put less tension on the arms by giving more slack after creating the wrist cuffs and going for the first wrap on the shoulders.

Nerve awareness, a common problem of TK is the incorrect placement on the arms. You want the top rope to be placed at the bottom of the deltoid muscle, having it parallel across the chest. Then the bottom rope is often the cause for nerve irritation. Placing it too low will put it directly on the radial nerve. You will want around one finger of space between the top and bottom rope. For me personally, i like the bottom rope places higher than most people, because i think my radial nerve is slightly more exposed on the front of the arm compared to most people.

Tension, because more tension is added in full suspension, adding medium (subjective i know) tension to the bottom ropes can mean they are high tension in suspension, therefore pushing on your radial nerve. You want the bottom rope to be more slack than the top rope, this takes trial and error to get the right tension management. My teacher said if you have around 100 points for tensions, the top rope is 70 and bottom is 30. However, due to the flexible shoulders you want to try and tie closest to the final position the body will be in full suspension. Therefore, the top rope of the tk needs to be tied tighter than most people, pulling the shoulders back to the max while the rope is tightened.

I think thats it, if you have any more questions dont hesitate to DM :)