Drew around leadlight then worked on mosaic (5)
I believe the answer is:
tiled
'worked on mosaic' is the definition.
The definition and answer can be both to do with contact as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?
'drew around leadlight' is the wordplay.
'drew' becomes 'tied' ('tie' can be a synonym of 'draw').
'around' means one lot of letters goes inside another.
'leadlight' becomes 'l' (this could be a standard abbreviation I've not previously seen).
'tied' placed around 'l' is 'TILED'.
'then' is the link.
Can you help me to learn more?
(Other definitions for tiled that I've seen before include "Covered in ceramic slabs" , "Covered or floored with baked clay" , "Lined with small glazed rectangles, say bathroom" , "with a glazed look" , "Like many roofs" .)