Thank you guys for your answers.
Regarding the set up position, I watched Mark Rippetoe teaching this way of grabbing the barbell, grabbing it, then put your shins to the barbell, don't drop the hips, chest up and squeeze, big air and lift.
I see that Defranco says hip hinge instead of just grabbing the barbell with a "butt high".
So what is the correct technique ?
@mackison, the screen that you took was just after I grabbed the barbell and chest up but before lifting, I try to "seat"on the bar (don't really see another image) and therefore my butt goes a bit back, I tried to take a screenshot just before I start the lift.
So in your opinion, are my shoulders still to much in front of the bar ?
I still have a lot to practice, each rep I did I did not engage the whole muscles I had to, some reps I told myself "last rep did not really used lats" and the next one I focused too much on the lats but then lacked of glutes squeeze etc
Deadlift is not the easiest but def the best when you know you're in the good way to master it !