Intent on putting on act, she started in Europe, leaving the east to go on tour (6)
I believe the answer is:
poseur
'intent on putting on act she started' is the definition.
I can't tell whether this defines the answer.
'europe leaving the east to go on tour' is the wordplay.
'europe' becomes 'eur' (abbreviation for Europe).
'leaving' indicates named letters should be taken away.
'the east' becomes 'E' (abbreviation).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'go on tour' becomes 'pose' (I can't explain this - if you can you should give a lot more credence to this answer).
'eur' with 'e' taken out is 'ur'.
'ur' put after 'pose' is 'POSEUR'.
'in' is the link.
Can you help me to learn more?
(Other definitions for poseur that I've seen before include "Hypocrite!" , "Person who's affected" , "Affected type" , "One shows off to impress" , "One who strikes attitudes, a phoney" .)