Sometimes when you’re drawing something and focusing too much on getting the proportions just right it helps to have a different perspective. Often you don’t have someone around so what you can do is hold a mirror up to your drawing, (or mirror horizontal if it’s digital) and if it looks right while it’s mirrored your anatomy is all right. It really helps to show things that are off , like if you mirror this, you can see the face looks fine in both iterations, but the spine looks off when mirrored, this means it looked okay to the artist when in that position but the anatomy or proportions were off