I think the main thing they show is some areas you were not comfortable in your welding position, going round corners etc and losing the torch angle in a few places.
All that will sort itself over time, move things around until you feel comfortable, try and arrange some sort of backlighting on the weld area to improve what you can see when welding and concentrate on adjusting your torch as you go along to keep the angle right..even doing it with the machine switched off just to get the feel of it and see how you are keeping or losing it.