The Rosie Webster actress, who announced her decision to quit last year, filmed her final scenes on the Weatherfield soap in December.
Teasing future roles, she told The Sun's TV Buzz: "The perfect role for me would be in Romeo and Juliet. The character Rosie can be quite bitchy at times, but Juliet is more like me.
"I'm a romantic person so I know I could play that part really well, and I'm quite good at Shakespeare because I studied him for my A-level in English Literature.
"It's a completely fresh start for me, I've been in Corrie for 12 years - it's all I've ever known. But now I'm living in Wales with my boyfriend [footballer Scott Sinclair], who I've been with for two years."
Flanagan, who suffered panic attacks in the autumn, went on: "I feel like I've got this new-found freedom. When I decided to leave Coronation Street, there was other personal stresses in my life.
"But a week later the panic attacks started. I've always been such a confident person, but I started getting feelings of anxiety and being geeky, I was too embarrassed to say anything.
"Gradually it got worse until it was full on for about a month. I was always comfortable at work, so for it to happen to me after 12 years wasn't very pleasant. Getting through it has made me such a strong person."
The star added: "Amazingly, I haven't had any panic attacks for the past two months. It was emotional, everyone came to say goodbye and I was given this CD full of pictures of me and Rosie since day one. But I love my exit storyline. I'm really pleased they didn't kill Rosie off and that the door has been left open."
> Helen Flanagan: 'Corrie exit hasn't sunk in'