I think you used too much low back and that looked more like a sumo sldl... Hopefully otheres with a better eye for detail on these things will chime in

Pullinbig?

form looks fine w/the exception of you pullng too far back at lockout. also relax your shoulders so they sag down as far as possible. this knocks several inches off the pull as does stopping at perpindicular.

hers a couple of clips, compare my lockout with yours.

http://media.putfile.com/John-705x1
http://media.putfile.com/john-745x1

one other thing to consider (this is for everyone) when you are setup just before you pull make sure your arms are hanging straight down. if they are angled back once the weight leaves the floor it will swing away from you causing you to lose leverage. if they are angled the other way then you are too deep in the hole. you wanna be in as high a starting position as possible while being in a strong starting position. this enables the legs to push off the floor to assist and for the hips and knees to lockout at the same time. forcing the hips forward is what completes a lift thats why a lot of pullers use the kettlebells as you saw sarah doing in the video. it teaches how to snap the hips forward. i have seen a lot of lifts missed at lockout because the bar is high enough to be locked out but the hips are left back and its very tough to push them forward if you wait til the last little bit as you have to push the weight off you to do this. this often leads to hitching, which will be red lighted at a meet.

I can'twatch you tube from work but I'll watch it laster and I really apreciate all the help. I will be pulling tommorrow.

i added to my post jim.

overal your form is solid. just a little fine tuning and you good to go.

see if you can film your work set/s tomorrow.