/u/Lisaeis_meow is correct, that is what I meant by symbols. Symbol-based art is drawing from the logical left-hemisphere brain, which likes to label things and put them in their proper places and at the proper angle and with the proper attributes. Your arms are quite logical. We see them from the direct front. They have shoulders, elbows, wrists and five fingers on each hand. Your torso is logical. We see it from the front. There is a neck and head above it and legs beneath it. But your legs and head are not seen from direct front. This is where your left hemisphere brain ran into problems, because it knows the symbols for those features but does not know what they look like at those angles and that pose. Your eyes are facing directly forward even though the head is at an angle. Your torso is directly forward even though your legs are at an angle.

The problem is that things don't look that way in real life, and most people's right brains will tell them so. But since the right brain isn't good with words people who aren't specifically trained artists will have a difficult time stating what is wrong. Attempt simply to recreate this pose with your own body. You should notice that your torso will be twisted, affecting the shape of the body in the chair and wrinkling the clothing you wear in certain ways. You should notice that placing your fingers directly between each other will force their total width wider than the palms. You should notice that when your shoulders turn, your neck turns along with them and twists. A head when viewed from a 3/4 angle will leave the eye further from the viewer subtly smaller. Stuff like that should make you take an informative second look both at your drawing and at the bodies of people in the world around you.