There are a few points that we would like to let you keep in mind before you start uploading:
All images must be geotagged with their location of capture.
Make sure all the images have sufficient overlap / sidelap (we recommend 80% each to start with).
Make sure all the images are captured within a single mission at the same area of interest. They can however be from multiple flights i.e. if you changed out the battery and then continued on the same mission.
Make sure all images are from a nadir angle (camera pointing directly to the ground).
To learn more about drone mapping, we recommend checking out our free e-book.