1-Cut with scissors Dielines and paste at the plastic. 2-Cut with scissors the plastic following the Dielines. 3-Separating the first mudguard. 4-Cut with scissors the second mudguard. 5-Separating the second mudguard. 6-Cut with a cutter the holes. 7-Separate the Dielines and the plastic. 8-You have two good mudguards finished. IF ANY DOUBT CONTACT ME.