Trim is used with these nouns:
beard, figure

Trim is used after these nouns:
fur, wheel, wood

carefully, neatly, perfectly
his neatly trimmed beard
a perfectly trimmed lawn

away, off
Trim away the lower leaves.

back, down (figurative)
We need to trim the hedge back.
The board will be trimmed down to eight members.

into
We trimmed the bush into a heart shape.

get your hair trimmed, have your hair trimmed

Trim is used with these nouns as the object:
beard, branch, budget, bush, edge, end, fat, fringe, hair, hedge, lawn, moustache, nail, sail, shrub, stem, toenail, workforce