So many things are wrong with this drawing. Maybe using some photoreference would have helped.  So let's count the problems.

Proportions. So outta whack. I know a fisheye would really pull things forward, but this is just outta control. His lead foot compaired to the other, the hand holding the glass compaired to the one on his head. It's unsettling.

Now lets talk about the chair. First, it only has two feet. Second, the perspective is totally off. It shows the chair's upper surfaces even though at that angle, you wouldn't see any of the top parts in the seat or the arm rests.

Speaking of perspective, the background persective is also wrong. At that angle you'd need more than one vanishing point. You've got one going to the left, but not one to the right. And look at the lights on the wall. Both flat. So strange.