A method may receive a first three-dimensional model of at least a body part of a person. A method may receive a second three-dimensional model of a wearable device comprising a head-mounted display configured to project a display. A method may predict, by at least one machine-learning model using the first three-dimensional model and the second three-dimensional model as inputs, a plurality of contact points between the first three-dimensional model and the second three-dimensional model. A method may compute a display fit value based on the plurality of contact points.