The moving tag used in the videos can be a bit confusing for newbies
Probably you have used the same video for live feed in all examples.
You have made the tutorial very simple using a step wise approach, which is great. e.g. step 1 showing static model on live video, step 2 moving model at same location and step 3 moving the model w.r.t the tag. There is no need of tag in step 1 and step 2 so it can be a bit confusing to show the tag moving video in step and step 2.