Nice neat and tidy job. The toes have arrived. Don't trim from the top too much. Walls look like they're getting thin. You need that wall thickness for protection and hoof shape integrity. Have more faith in the bevel holding the fort at the toe instead.
The hoof is not too steep, but all heels needs to balanced, pulled back and quarters cleared. Bars brought down accordingly. Sorry, can't draw lines on videos to show you.
Yes. But the bars and quarters are beside each other and act together. If you can give me a heel shot like the one that starts your video, or better yet, heel shots of all four, I will show you how the quarters, heels and bars should all line up to become one at the back of the foot. This will also promote a healthier frog, which is your star player for the back of the foot.
I found it difficult to get a good idea from the vid sorry. I think pics would be better. There's a link in my signature with some good tips for hoof pics. The problems I had were with the camera always moving, with the angles not being quite square, or if they were, fleetingly and I found it harder to tell balance. Also with pics you can go back & have a good look at a particular angle, make measurements, etc, which is harder to do with the vid. I also thought I was looking at befores & they were afters, & vice versa some of the time, because I was concentrating on the pic not the lable.
So anyway, you don't tell anything about the environment the horse works or such, but looks like a pretty reasonable trim, from what can be seen. Maybe a couple of minor imbalances. I would perhaps further address the flares & such, doing it from underneath mostly, as Missy explained.
Something that helps me even when I'm just trimming is to hold a shoe on the hoof and see how level the ground surface of the hoof is. If you just started I would guess (I couldn't tell from the video) that the quarters are lower than the toe and heel. On at least one hoof it also looked like the toe was dipped a little. Make sure that the hooves are balanced front to back and side to side. If the hoof is balanced and has been balanced for a long time then the frog will be in the middle of the hoof. Meaning that there will be the same amount of sole on the left as on the right side of the frog. That's not the case with your horse although it may be caused by conformation. The reason I mention it is so that you can be aware of any changes and adjust accordingly.
Something that helps me even when I'm just trimming is to hold a shoe on the hoof and see how level the ground surface of the hoof is. If you just started I would guess (I couldn't tell from the video) that the quarters are lower than the toe and heel.
Sometimes horses aren't actually made to be level on the ground surface.
I agree especially when initially learning, rasping the ground surface is easier to do it level to begin with, then finish the job by 'scooping' quarters as/if necessary & rolling toes/outsides. But we're seeing the finished job here.