Personalised picture of military display? (6)
This clue is a double definition.
'personalised picture' is the first definition.
'military display?' is the second definition.
(I've seen this before)
'of' is the link.
(Other definitions for tattoo that I've seen before include "piercing?" , "display involving military band" , "Pageant; drum beat" , "Military display - needlework!" , "Edinburgh show" .)
'personalised picture' is the definition.
(as in a tattoo)
I don't understand how the rest of the clue works.
(Other definitions for tat that I've seen before include "What you get for tit" , "Shoddy stuff (colloq.)" , "Shoddy items" , "Tawdry stuff" , "Tasteless rubbish" .)