What is the church teaching on raising your hands with the priest in mass?
The Roman Missal does not allow for the faithful to raise their hands in the “orans” position (or hold hands) during Mass. Such posture is reserved for the priest.
§ 2. … In eucharistic celebrations deacons and non-ordained members of the faithful may not pronounce prayers — e.g. especially the eucharistic prayer, with its concluding doxology — or any other parts of the liturgy reserved to the celebrant priest. Neither may deacons or non-ordained members of the faithful use gestures or actions which are proper to the same priest celebrant.”