do you have some differing thoughts from what the video was advising? i'm all ears for helpful advice at this point, as i've just started shooting trap, and i'm probably only hitting 15-16 out of 25 on a good day.
That video is a good starting point for a new trap shooter. The only thing that I would add is that the amount of elevation you hold on over the house is different for a two eyed shooter than it is for a one eyed shooter. Generally speaking a one eyed shooter, that is one who closes one eye when shooting, will need to hold lower on the house.
The reason for this is that you must first see the target and determine what direction it's moving before you can move your gun and shoot it. For one eyed shooters, holding higher over the house will allow your barrel to block your sight path to the target. By holding lower your barrel will be less obstructive of your vision giving you a better look at the target before you shoot.
Once you get the basic sight picture, gum mount, and stance worked out you will start to break more targets. Then you can work on fine tuning all three.