Pruning and manicuring
Most house plants do not need real pruning as big trees do in a garden. But dead leaves and broken branches, should be removed whenever spotted.
Do not remove a half-yellowed leaf from the plant, let it turn completely brown before removing, because this will cause other leaves to turn yellow as well. As for aesthetic reasons, if you want to cut off a dead part of any half-browned leaf; you can do it with a pair of scissors. Just leave a tiny margin of the brown on the leaf, and trim. Never in the green zone, because that part will turn to brown later on.
Manicuring indoor plants is not a necessity, it is only for aesthetic reasons, shaping the plant to the look and size you wish.