You are told to enter design for puppet (8)
I believe the answer is:
'for puppet' is the definition.
'you are told to enter design' is the wordplay.
I cannot quite understand how this works, but
'you' could be 'u' (commonly used in online communication) and 'u' is located in the answer.
an anagram of 'are' is 'rea' which is present in the answer.
This explanation may well be incorrect...
(Other definitions for creature that I've seen before include "Any organism with voluntary movement" , "soul" , "Animate being" , "Bird, beast, insect etc" , "Bird, beast or fish" .)