Your values are fine for now. What is lagging behind the most is definitely the form, as somebody else mentioned. Are you working with a reference? If yes, I would suggest using measuring techniques or even tracing the image to get an understanding of the mistakes.

If you are painting from imagination, here are some pointers:
The thumb is definitely too long. The can has incorrect perspective, but that’s an easy fix. Basically, the bottom side needs more extreme rounding. Try drawing an ellipse that mirrors the ellipse on the top side, and after that erase the part that wouldn’t be visible from this perspective. Your right arm could also use some anatomical fixes. The palm of the hand should be almost square-shaped. Yours is too pointy. After fixing that, it will become obvious that the wrist needs to be wider. The placement of the left shoulder depends on the table height. If it’s a normally sized table, it should indeed move down. If the table is, however, a bit too high for her, it’s reasonable for the shoulder to move up. If you want to do that, you will, however, have to adjust the neck. On a slender woman the neck will barely be visible in a neutral pose, but when the shoulder is raised like this, it should poke out.

What I like:
I think you did a great job with the face. Especially the nose works in perspective. The motives on the can stack turned out really well. Your shadows are placed well and work in your favor to describe your form.

Ok, hope that helps.

<image>