Use a nail puller or pry bar under the nail head
Tap the tool gently with a hammer to get leverage
Rock the tool back and forth to loosen the nail
Pull the nail out slowly and steadily
Use locking pliers if the nail head is exposed
Grip the nail firmly and twist while pulling
Drive the nail through from the opposite side if the head is inaccessible
Use a punch or nail set to sink a proud nail below the surface
Wear gloves and eye protection
Replace damaged or bent nails with new ones if needed