1) Grip doesn't have to be narrow. It depends on your flexibility. You can potentially go wider as long as the bar is secure.
2) Stand up all the way when you take the bar out of the rack.
3) When you breathe do it slower and try to keep your back flat. Also, minimize wobble/bouncing of the bar due to your breathing.
4) Lean over more as you go down and keep your back flat.
5) Your feet aren't really visible here (see the sticky), but I think they might be a bit too narrow.