Picturesque scene with some untidy llamas (5)
I believe the answer is:
idyll
'picturesque scene' is the definition.
(I've seen this before)
'with some untidy llamas' is the wordplay.
'with' indicates the answer is hidden within the clue.
'IDYLL' is hidden within 'some untidy llamas'.
(Other definitions for idyll that I've seen before include "Utopian scene" , "Idealised prose" , "Romantic pastoral composition" , "Short pastoral poem" , "rural image" .)