Since my brother died suddenly two years ago, my sister-in-law has valiantly kept going the small jewellery store he left her.

The hall was decorated with Japanese paintings.

They adorned the room with flowers.

She decorated the wall with pictures.

She decorated her room with bright color.

She decorated her room with roses.

There are grammar books that call these sorts of things, not modifiers, but adjuncts (A).

Things that modify nouns (adjective, or adjectival equivalent).

The room is richly ornamented.

Bob mounted the portrait in a fancy frame, but it was upside down.

Two nasty guys robbed me of my jewels and ran away.

A delivery man is dropping off an arrangement of artificial flowers.

The "retired" president of that company runs the whole show from behind the scenes, so the current president is nothing but a figurehead.

She decorated her house regardless of cost.

A modifier has, just as it sounds, the role of embellishing sentences.