Make Me a Mask is a song written by Lindsey Buckingham and recorded by him for Fleetwood Mac's 1992 compilation 25 Years: The Chain where it is one of four original tracks.
Buckingham was not a member of Fleetwood Mac during the 1987-97 period. He performed all vocal and instrumental parts on Make Me a Mask which was presumably added to the compilation to increase market value by having it contain at least one new song from each songwriter from the classic Rumours period.
The 2013 song It Takes Time was also entirely performed by Buckingham in spite of being featured on a Fleetwood Mac release.
The song has never been made available anywhere else and is not available for download.