That’ll work.
I used to do that myself, but it cluttered up the kitchen after a while and I wasn’t happy - not to mention if you delete a TV Show from the interface and there’s a poster image, or subs, in there… no can do. TV Shows/Movie folders with stuff that ain’t TV Shows or Movies in them don’t get deleted when the TV Shows or Movies do.
Nowadays I just drag the poster into the edit window in the area provided - or paste a link to an image online - it shows up in the list of poster, I select it, and the kitchen is spotless.
2:
You would like to give a collection a poster of your own?
Yea, shouldn’t be a problem. Just hover over the collection, strike it’s pencil, and do your worst, Magillicutty.
Apologies if I misunderstood.