Okay, again, overall not bad!!
1st barrel --> his butt seems to swing around the barrel, versus really digging in. Make sure you use your outside leg (keeping weight in it) to keep him using that hind end.
2nd barrel --> You turned just a tad bit too soon, which caused you to leave the barrel wide. Go into the pocket a little deeper, so that you can finish your turn nice and tight with the second barrel, and head directly toward the 3rd barrel. Do not drift or arch.
3rd barrel --> can't see exactly what happened, as things are small and the back glare is bright. But did he try to turn too soon? He was hopping on his front end like he did. Chances are, since you left the barrel wide, that's what happened. Again, make sure you go deep enough into the turn (do not turn until your leg is in the middle of the barrel, or past the barrel) so that you can finish the turn tight.
Mostly just some minor rider cues that can be fixed! Nothing huge.
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.