Ahh, it is so awesome that it went that far; I didn't think it would! Nice going, Radiant! X)

If you include this, there are currently 99 pictures submitted on #OCSantaHat

Um, so I was going to teach you about the Fibonacci Sequence which help me with drawing humans and other creatures, but trying to explain it ended up creating a gigantic paragraph of text. Shall I separate it into a couple posts in hopes of not overwhelming you? ^^'

In the future I'd also like to make a tutorial or walk through of what I've written, so you can wait if you'd like, but I can't guarantee it'll come.

Re: Haha, alright. It is actually incredibly simple, but I'll divide this into three sections to make it easier to remember.
First of all, the blueprint I've been following is called the Fibonacci Numbers (or sequence). Since I can't explain it as well without illustrations, here's a link to a short video that might help you get a gist of it:
https://m.youtube.com/watch?v=P0tLbl5LrJ8
I'll still make an attempt to explain it below.

1. The Fibonacci Numbers
Basically, the Finonacci numbers are 1, 2, 3, 5, 8, 13, 21, 34, and so on where the last two numbers are added together (1+2=3, 2+3=5, 3+5=8, 5+8=13, etc.). On their own, the numbers seem pointless, but when you square each number and arrange the squares in a spiral pattern, it creates what is called the Golden Rectangle. The spiral shape that fits inside it is called the Golden Spiral or Fibonacci Spiral (the video would be helpful by now X'D).

2. The Fibonacci Spiral in Nature
The Fibonacci spiral is surprisingly found in many organisms on earth.
The nautilus shell is the best example of the Fibonacci spiral, but many plants like flowers, pinecones, pineapples, and even waves and galaxies share the same pattern. But what I'm trying to get at is that it is found in the human's body as well. If your fingers are flexible enough, by curling them up, the bones in your hand would line up precisely in the Golden Rectangle blueprint. If you continued on, your radius and humerus would join the pattern. It's the same with your height. If your head is one unit long, add that with one unit and you get two units - the length of your torso. Your head plus your torso equals the length of your legs - three units.

3. Applying it to Your Art
This "Golden rule" is actually what makes people and organisms attractive to the human eye. Basically, the closer a person's anatomy aligns with the blueprint, the more appealing they are to look at. I think that's why babies like to stare at certain faces, because there's something attractive about it but they can't tell why. So, if a person's fingers are too long for the length of their arms, the human eye detects it and find it unusual.
By following the Fibonacci spiral's blueprint in your art by making each limb a fraction longer or shorter than the connecting limb, you can make nearly any creature more appealing to the eye.

Oh yeah, I decided to share this all with you because the only thing I could really detect in your recent human drawings was that the arms were often nearly the same length as the legs. I think that happens because you (and often myself) tend to draw the torso longer than the blueprint calls for, so we naturally stretch the length of the arms, but we don't do the same for the legs.