I went over it one time and explained a good system to get her started until she feels a lot more comfortable. For now, she writes out a line of her ABC's and then works her way down the line to organize her work then she double checks it with a singing it and if everything looks good she glues it down. So far, so good! Holly has even encountered having to sort by the second letter, twice and I think she understands you repeat the process using the second letters. We'll keep working on it with her list each week... if nothing else for fun right now as she thinks of it as a game.
These sheets can be found at: http://www.superteacherworksheets.com/