I edited your character showing better arms. Currently your character has no issues with centre of mass. However I thought it would be a good chance to discuss it and in future I can refer back to this post.
CENTRE OF MASSWhy do we need to know about it? Sometimes people draw pictures of people that look like they will fall over. Placing the centre of mass between the feet will stop this problem.
What is it? Imagine you were to cut a person into a bunch of lego sized pieces. Each piece could have a different mass depending on the material. The centre of mass is an average of the pieces that takes into account their individual position and mass.
In A, the centre of mass is in the middle of the dumbbell.
In B, one side is missing. Now, because there is more mass on the left, the centre of mass is closer to the left.
The gravity force acts through the centre of mass. C kinda shows this, imagine you threw the dumbbell. The centre of mass takes the same path as a ball (with same mass) thrown the same way.
D is a glass. The centre of mass is in the centre
because the glass is symmetrical.
In E we have tipped the glass slightly. It will fall back to its original position. Try this. This is because the gravity force (which is shown by the arrow pointing down) is to the left of the normal force (arrow pointing up). The normal force is due to table pushing the glass up (you don’t fall through your chair right now because of the force we call the normal force).
In F, now the gravitational force is to the right. Oh no, it tips over.
So, in H, the centre of mass is to the left of the normal force and he will tip. I is an attempt to have a character well balanced. By leaning to his left and having his left arm out, he has shifted his centre of mass to the left. Also, by bending down a bit, the centre of mass is shifted down (this reduces the turning effect). He can easily adjust the com by adjusting his arms if he begins to tip.
Moral of story: guess where centre of mass is, make sure it not to one side of the normal force. For people standing on both feet, this means have the centre of mass between the two feet.