His torso looks too long, and his upper arms look much longer than his forearms. Try sketching in the body underneath the clothing, so you can more easily spot anatomy/proportion problems.

I recommend blocking in the whole painting before you go in and refine the details. It's a lot easier to tweak the composition and anatomy when things are still rough.

This is not a critique, but rather a suggestion for a different way to think about torsos.

The pelvis is an important part of the torso, and legs attach to the sides of it, not below it. Including it like this and attacking the legs to the sides should help you construct the body correctly more easily.
I also sketched in the ribcage. It's useful because the elbows more or less line up with it, making it a great guide for arm proportions in addition to torso shape.
Don't skip the feet and hands, either. They're important to the proportions, and not including them can throw you off.

By blocking in the painting, I meant the whole painting, the entire composition, not just the character.
In addition, blocking things in is only helpful when you block in with a purpose. Just filling in your sketch doesn't achieve much. The goal of blocking in figures is to work out the shapes/forms without the details getting in the way. It can be pixel-rough, but what you have there is so rough that I doubt it'll be useful to you. The goal of blocking in the whole painting is to work out the composition - these blobs can be rougher, but they should correspond to the colours and shapes of the major elements in the image.