The door should match the house and the size should be proportional. It is best to avoid the cottage with doors, because Feng Shui pays attention to the air, and the entrance door is the air inlet of the house. If the house is small, there is not enough air gathering space, and the door is too big, the occupants will be greatly washed away, which will affect their health.
On the other hand, if a mansion is equipped with a small door, the air intake is insufficient, which is not conducive to wealth.
I hope it helps you.