Excited to go and do the unfinished pattern on fabric (8)
I believe the answer is:
dogtooth
'pattern on fabric' is the definition.
'excited to go and do the unfinished' is the wordplay.
'excited' is an anagram indicator.
'and' says to put letters next to each other (I've seen this in other clues).
'unfinished' means to remove the last letter.
'the' with its final letter removed is 'th'.
'to'+'go'='togo'
'togo' is an anagram of 'gtoo'.
'gtoo' after 'do' is 'dogtoo'.
'dogtoo'+'th'='DOGTOOTH'
(Other definitions for dogtooth that I've seen before include "that may be pulled" , "Canine" , "Check" .)