
Checkmate with a rook requires more precision than with a queen. You must use your king actively to help restrict the enemy king's escape squares.
Use the rook to cut off ranks or files
Bring your king to the 6th rank (or 3rd rank if defending from below)
Use 'waiting moves' with your rook to force the enemy king to move
Remember: Your king must be on the 6th rank before delivering mate on the 8th
Trying to checkmate without bringing your king close enough
Allowing the enemy king to attack your rook
Creating stalemate