Hey Mathias, your refinement is fabulous and I hope you can finish this to your satisfaction in the time left.
I feel a bit of a pooh saying this at this point, but I am not too keen on the hand at the top right. I always thought the strange behaviour here is that the orcs are having a cheerful tea party, but the cat being held doesn’t look too comfortable and seems to me like he is being deliberatley held away - to me it’s almost like the orcs have gate-crashed the teaparty and are monopolising it.
I realise you are looking for a solution on how to work the left arm and hand of the orc on the left into the picture, especially as he is so close to the orc on the right. To keep the scene intimate and within the strange behaviour theme, have you thought perhaps he could have his arm around the shoulders of the other orc in a brotherly fashion - you would then see his left hand on the left shoulder of the orc on the right?
As it is currently, the composition of your piece seems to me to be almost circular, with the only thing breaking outside that circle being the hand holding the cat, which I think gives it unnecessary focus - with his hand on the shoulder of the other orc, that circle would be maintained, and even perhaps reinforced, especially with the added bonhommie.
So that is just my own opinion, and as usual I feel a little nervous about giving it about something so close to someone else. I hope you can come to a solution you are happy with. It is a splendid picture.