I see what you are going for with the turn, the classic cartoon like spin, but tbh I think the way your character is turning should be hard if he is holding a heavy object. I guess act it out in front of the mirror to see if it works. And that way it would help you with more natural and believable motion. Once you have that, you can exaggerate it in a cartoon-like style later.
What part of the timing I feel like Que hands moves to fast in the beginning and the box
The turn after he lifts the box up. It feels off with timing.
I think the head should move first then the rest of the body follows right?
I see what you are going for with the turn, the classic cartoon like spin, but tbh I think the way your character is turning should be hard if he is holding a heavy object. I guess act it out in front of the mirror to see if it works. And that way it would help you with more natural and believable motion. Once you have that, you can exaggerate it in a cartoon-like style later.