I thought I'd go through the steps to make myself a MetaHuman one Friday afternoon.
Step1. Spin around in my office chair in front of my camera on a tripod with a remote in my hand. Took 150 photos at three different heights.
Step2. Process photos into a mesh in Metashape.
Step3. Reduce, align, wrap another topo around it. I think the only one of these steps that was required was to align it. I wasn't keen to bring in a super high mesh to Unreal though.
Step4. Mesh to MetaHuman Identity alignment in Unreal.
Step5. Customize in MHC.. add sweet hair.