![A fancy throne design.](https://minecraftfurniture.net/wp-content/uploads/2020/05/669279.jpg)
The arms are made with a slab with for the arms (stairs at the back are placed facing the back.)
The high back is achieved with with an upside down stair ontop of another a stair block. a Slab on top and a hatch on front. With your choice of Wool Block, or any full block for the seat.
Thank you for the submission MarkedForDeath