You cannot create big clouds if you have a hookah that restricts the airflow. To begin with, you need a bowl that has a sizeable funnel. The hole cannot be tiny. Second, you need superful quality hookah foil. Therefore, you can consider JYFOIL.
Besides that, another factor you need to keep an eye on is it. If you cannot have enough air flow down through the bowl, then the stem, onto the base, and finally up the hose, then you can never create big clouds.