I phoned Liam's management in Ireland back in 2019, and posed the question of a TTM for Liam and the secretary abruptly said 'no don't do that ', then terminated the call. You're best bet is to wait until he's filming somewhere and write to him via. venue, once sent I believe you're chances of yielding a success from Nielson will be about 41%.

Hi again Pruwho@Icloud.com

Thank you for your feedback

At which address did you send your autograph request please?

Fanmail

I sent Liam an autograph request but I didn't get a response from him a shame ,I liked the idea of having his character qui gon Jinn amongst my autographs but never mind doesn't matter