I must say that your tutorials are very interesting and useful :3 thanks for sharing :hugs:
One quick thing you might be planning on doing is talking about the head-to-body ratio. That helps for non-action poses a lot, which is what most starters are gonna try.
The human body is typically 7.5 head heights tall (8 head for royalty or superheroes in drawings, oddly enough). And, since most of us are drawing humanoid or anthro characters, I would stick close to that ideal. You've got a little more wiggle room with anthro characters, but I wouldn't make them shorter than 6.5 heads or taller than 8 heads, otherwise it gets too off-putting.
If you're working with canine non-anthros, the head to body would be something like ~3.5 heads long from snout to rump, a few more lengths for cats (~6), Horses (~5). Of course, this is a thread for anthro characters, but that might be helpful for a plausible length of the head for those anthros.
There's an entire thread already on the subject.
Luckily, I have the advantage of blaming that goof on my noobitude.
EDIT: doesn't explain why I didn't see it in the stickies, though. Hahaha
Humans have a natural curvature to our spines. It's curved this way for optimum balance and weight distribution.
In a plantigrade furry, nothing changes, except for the addition of a tail. Since he's already perfectly balanced, the tail (which is an extension of the spine) would be purely cosmetic.
But with this spine curvature in a digitigrade furry, he's totally off balance, and in danger of falling on his face, even with his tail held outward for balance.
Because he's got the lower leg structure of a quadrupedal animal, he'd have to have the same spine curvature to keep himself balanced. With his spine arched outward, his centre of gravity is pushed back over his hips, rather than over his knees.
Even in this case, his tail would still likely be used for balance, and so it would also be more compact and dense than it might be normally.
Can I make a technical correction to one of the arguments about feet? Let's see, somewhere around this....
A digitigrade furry's center of gravity doesn't strictly need to center over the knees or hips, but if it's intended to be a balanced pose then the center of gravity must be centered over the toes, the points which actually contact the ground. If this is the case then the posture is balanced, by definition, regardless of all other arguments.
And of course, just because a digitigrade furry has the lower legs resembling an animal's doesn't mandate him to have the spinal curvature of one. After all, animal spines are optimized for horizontal orientation, and the furry is vertically oriented. The only good references we have for vertically oriented spines are ... well, us homo sapiens.
"Awkward" and "off-balance" are not, technically speaking, the same thing. But yes, an upright subject's center of mass tends to settle around the waist/hip area (insert obesity jokes here), so the hips are a useful guide as to where to place the toes. Visualize a straight line from the hip to the ground, and that's where the leg+foot starts and ends, regardless of digitigrade or plantigrade.The design is still horribly flawed, though. It's all fine to have the centre of balance above the toes, but if the toes are forward of the hips, as they'll tend to be at that sort of stance, the character is off-balance all over again.
"Awkward" and "off-balance" are not, technically speaking, the same thing. But yes, an upright subject's center of mass tends to settle around the waist/hip area (insert obesity jokes here), so the hips are a useful guide as to where to place the toes. Visualize a straight line from the hip to the ground, and that's where the leg+foot starts and ends, regardless of digitigrade or plantigrade.
And of course, if the creature is standing upright, it's safe to assume their legs will be as fully straightened as possible, to reduce the amount of load the leg muscles must bear to maintain that posture.