Simplify the following text for a Grade 12 native English-speaking person.
Original: Shaped wire cages are sometimes employed in modern topiary to guide untutored shears , but traditional topiary depends on patience and a steady hand ; small-leaved ivy can be used to cover a cage and give the look of topiary in a few months .
Simplified: Shaped wire cages are sometimes used in modern topiary but traditional topiary depends on using special scissors with patience and a steady hand .