Tried to a MUFC one for my friend based on this Liverpool design by Tong_G (559075).
However the logo by CSD_Salzburg (1750326) did not print fused with the back correctly and had to use glue to stick.
Printed flat with logo on the upside.
Revisiting the file and made some changes so that the little gap earlier present is now no more.
Please download the new file and print.