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The actress recently filmed her final scenes as Faye Lamb, who leaves the village in tomorrow night's double bill of the ITV1 soap.
Discussing her time with the Yorkshire-based drama, Thomson told This Morning today: "I'm going to miss it. But two years is quite a long time and I don't live there. I live in London and I spend a lot of time in LA, so that's tricky - you only get home one day a week. And I've got other things I want to do as well - I've got other projects.
"I've just written my first screenplay and I've got an option on a book - it's a thriller that I'm really excited about, called No Good Deed, and I've just got a final draft of it, so I'm excited. Now the hard part begins of getting it made!"
Thomson added that she is also considering further study after securing a first class degree in Politics, Philosophy and History last year.
She said: "I won't do it this year because I've got these writing projects and various things, but I'd like to do a masters."
The star also praised her most recent Emmerdale storyline, which has seen Faye embroiled in a catty feud with Charity Tate, played by Emma Atkins.
"It's been great. I had a year-and-a-half where it was the tragedy, the grief - everything was going on. But for the past six months, it's been bitchy sessions with Charity," she explained. "[It was] so much fun - she's so lovely, Emma, and we've enjoyed it to the max."
> Click here to read our Emmerdale spoilers
