Looks like an excellent guide here for when I try it. But I had to laugh at this:

“Another reason why scale models are not often seen on display is the matter of suitability. Nobody would bat an eyelid at a vase of flowers on the table in an entrance hall.  But how about a muddy Sherman Tank? That would be considered a little odd and unlikely to match the rest of the room’s decor.”

This is not true in my place! A Sherman is definitely on my to do list, as it happens.