3D modelling / editing

I’m struggeling to make a good 3D modell out of my mixed aerial/terrestrial photos.

Since I live in a place where there are no Pix4D seminars, how can I learn how to create excellent 3D modells, eg not the one that I get with automatic settings?

I’ve tried a lot of things, but obviously I am missing steps. I’ve looked trough all the Pix4D webinars, they are nice, but lack of in dept explanations and walk-trough actions from scratch to end.

Any help would be much appreciated.

What sensor/s is being used?

Gary,

mostly DJI P4P and Sony A6300.