Thanks for the information, I was worrying about this for a month, constantly fiddling around with my tongue trying to find the right position, but hearing this from you makes me less anxious.
A user on the site Lookism by the name of Donsjohns stated that the further back the pressure is applied on the hard palate, the more influence it will have higher up on the face (Posterior part of palate influences the middle third, while the more the pressure is located towards the anterior part of the palate, the more the lower third of the face will be influenced)