This is my Skymatix livery for the PMDG B736
(1) Please extract the "736 Skymatix.ptp" livery file to a tempory folder such as yuor desktop
(2) Open the PMDG Operations Center and install it via the livery utilities, use the Install from PTP file option as per the PMDG manual
Example - https://prnt.sc/4pBWKpLz70qZ
Thank you for your Support!