Avatar viewpoint placement
One of the most poorly-defined yet critical things in configuring a VR avatar is where exactly to place the viewpoint. It can have a lot of impact on your viewing experience, especially with how the viewpoint ends up relating to the rest of the body. This becomes especially critical in systems like VRChat and Resonite where the physics of the body are directly impacted by this placement, and especially now that VRChat has built-in functionality for allowing a first-person view of your facial features (which the critter avatar calls “first-person snooter”).
When building a humanoid avatar that has proportions that more or less match one’s physical body, you generally want the viewpoint to be situated such that it’s placed at the same relative depth from your real-life view origin compared to your shoulders, as this means that your virtual head will be tracked with the same relative offset from your virtual shoulders as they are from your real ones. Otherwise, your virtual arms will seem to be the wrong length when fully extended.
But this raises the obvious question: where’s your physical view origin?