Don't be afraid of the dough when pulling and twisting. Each breadstick will be slightly different in shape and length, but try to keep them as close to the same size as possible so they'll bake evenly.
If you like spicy food, try adding a touch of ground red pepper (cayenne) to these cheesy breadsticks. You'll need only about 1/8 teaspoon, unless you really want to spice it up. Sprinkle it on with the Parmesan cheese.