Really spooked standing next to clone? (6,7)
I believe the answer is:
beside oneself
'really spooked standing' is the definition.
I know nothing about this answer so I can't tell whether this works.
'next to clone?' is the wordplay.
'next to' becomes 'beside' (I've seen this in another clue).
'clone?' becomes 'oneself' (I can't explain this - if you can you should believe this answer much more).
'beside'+'oneself'='BESIDE ONESELF'
Can you help me to learn more?
(Other definitions for beside oneself that I've seen before include "Irrational, eg with worry" , "Distraught" , "Lost control, distracted" , "Overwrought - is so enfeebled (anag)" , "Overcome with worry" .)