Edges in wearing shoes, being careless (8)
I believe the answer is:
slipshod
'careless' is the definition.
('slipshod' can be similar in meaning to 'careless')
'edges in wearing shoes' is the wordplay.
'edges' becomes 'lips' (lip is a kind of edge).
'in' indicates putting letters inside.
'wearing shoes' becomes 'shod' (I've seen this before).
'lips' put within 'shod' is 'SLIPSHOD'.
'being' acts as a link.
(Other definitions for slipshod that I've seen before include "Careless in thought or organisation" , "Sloppy and haphazard" , "Lacking in care" , "Careless, slovenly" , "Haphazard, slapdash" .)