What book are you reading? Are children likely to be familiar with it?
Introduce puppets to the children at the beginning and chose children to hold them.
Look at the book - ask the children to identify the title and the author, and read the blurb on the reverse with them. Talk about what they think the book might be about.
Then read the book. Keep stopping briefly for each character's part and get the child to act ot what is happening - or, if confident children, to repeat a key line.
When reading use voices and good expression.
If going well, you can stop part way through and see if the children think they know what might happen next.
Then read on.
At end - discuss the bok.
You could get the other children to question the characters. How did they feel when x happened? etc.
Does the school have any specific stprytelling techniques - such as Pie Corbett?
I love telling stories to/with the Y1 class I work with.