Adding too much cheese
Who doesn't like to take a bite off of a pizza and watch the cheese stretch? As its perfume fills the air, perhaps it even catches the light just perfectly. However, going overboard with the cheesiness isn't necessarily a good thing. According to My House of Pizza, if you top your pizza with too much cheese, the crust may become mushy. Nobody likes a soggy pizza, of course.
But in addition to making a pizza mushy, adding too much cheese can weigh down the dough and cause it to lose the beloved crisp crunch. When you prepare your own pizza, you might not envision biting into a soggy crust. By adding just the appropriate quantity of cheese that will make you drool but won't ruin your crust in the process, you can maintain the balance of your pizza (and the crust).