Moving awkwardly after dispatching large cotton sheets (7)

I believe the answer is:

wadding

'cotton sheets' is the definition.
(wadding is made of cotton sheets)

'moving awkwardly after dispatching large' is the wordplay.
'moving awkwardly' becomes 'waddling' (to waddle is to move awkwardly or clumsily).
'after dispatching' indicates named letters should be taken away.
'large' becomes 'L' (eg in clothes sizes).
'waddling' with 'l' taken away is 'WADDING'.

I've seen this clue in The Times.

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