AFAIK there is nothing in the army book that states chosen have to be modelled differently to other warriors.
I think the most common way of distinguishing them is to paint them slightly different to the normal warriors. That’s not compulsory though, as long as you let your opponent know which are chosen and which are not.
I think the most common way of distinguishing them is to paint them slightly different to the normal warriors. That’s not compulsory though, as long as you let your opponent know which are chosen and which are not.