In order to look good in video calls, make the effort to place the camera at eye level. One of the universal “no no’s” is to have the camera positioned low & looking straight up your nose.
There are many way to achieve this, such as placing your Laptop on a box, propping up an iPad with books , or buying a iPad stand.
A simple solution using something you may already have lying around is to re-purpose an old computer monitor stand. I had one left over from an old 17″ monitor. Attach some rare earth (strong) magnets to the steel mounting face of the computer stand, & a small steel plate to the back of you iPad. You can get these parts when you purchase a cheap magnetic smartphone mount for cars. My mount has a sticky rubber mat (again designed for holding smartphones) that protects the back of the iPad.