Lifting a heavy object

I think i could of spent more time on this a bit more. Im quite happy with the weight being lifted, but i think the box moves a bit much and the character doesnt have a simple staight down bend and its all over the place.
I think i could of worked on the weight on the characters hips and legs as he moves over the box.
I need to have more anticipation before he lifts the box, he almost goes straight into the box lifting, he bends to far over the box and should attempt to lift the box eg tug at it, test it then pick it up.

If i was to do this again i think i would spend more time on Keeping the spine straight, lining up the box and the weight of the persons walk as well as anticipation.