Never be afraid to tug and pull the bow to make it the shape you want. If you are trying to make lets say bigger bows with 5/8" ribbon it's going to be harder to make those loops stay how you want. I started the same way and now I can make 1" twisted boutique bows with 1/4" ribbon. It takes practice.
Here is my first hair bows versus now. Sorry for the bad pictures. 5 years later and I still think I need to improve