How do I set up a twitter timeline template to input my own text?

[Anna]

I want to make a twitter layout for an english project--different characters of a book tweeting each other. Is there a place I can get one easily or should I just make a bunch of different accounts?

[theanswer]

Yes, there are at least two apps that let you have multiple users under the same Twitter account.

One of them is cotweet (paid) and the other one is Birdherd (free).

Haven't tested them but they do what you need, unless your story needs dozens of different characters.

http://birdherd.com/