boo_moo
I just sort of go as I like. I usually draw the head and face with all the details first(except the hair) becaus I usually end up drawing a wonderful eye, except that's it's either too big or small for the face.
stressed So I end up reasing teh head and drwaing around the details. After that I draw the body.
I can't draw male hips very well, even with anatomy books, and it's sort of embarrassing to be looking at a guy's torso, hips and legs for a while only to have him catch you and ask you what you're staring at. Has happened too many times for me before.
sweatdrop pfft! don't be embarrased to look at those anatomy books that display the details of a male gential (did I spell that right?). its not like you're looking at pr0n, your looking at references for drawing
3nodding or if its a real guy, just jab him with a pencil and say "TIS AN ARTIST AT WORK!! NYAR!"
Dun dun dun!
The key is: Remember your "S" curves!
If its a person, draw a 'line of movement' first. Find out how the person is bending/twisting their body. Females especially have dynamic S-curves (most of the time). From there I just see how the legs would be placed to make the character look like it has gravity: make sure it looks like they're planted firmly on the ground (or if they are jumping, trippng, make it look like they are. Get some pictures from Google of martial artists. Or go to an elementary school playground and do some sketches)
Exaggerate the pose! If you're sketching someone runninig away from the neighbours dog, make them look like they're running for their goddamn life and anything they run into will be roadkill.
As for the circles: There is no circle!!! Bwahahaha! (
teehee, j/k) I guess for the really basic stuff you just simplify the human figure into flat shapes. In most cases, circles are the best choise (some people use boxes or even triangles)
Then they detail the figure from there.
Just to note, a lot of people forget to put in certain anomilies when drawing figures (unless its anime or toony, but even those still have distortions). What makes the person look old? young? female? juvenile? There's more to making a character look old than putting a few wrinkle lines in the face. There's the posture and the way the picture portrays the movement of the old fart. The same goes for a neighbourhood brat: the way he/she acts, interacts with people and objects, their size, etc. The proportions will come when the idea of the character is set.
lol, and for breasts; if you rest your arm at the base of your neck, the breasts will approximatley start underneath that arm (unless ya have thick arms, haha!)
*whew!* I think I put too much useless stuff in there. What was the question again?
xd EDIT: oh, and of course, check out
http://www.conceptart.org/forumsStuff, incase you have no idea what I'm talking about
sweatdrop or this might just confuse you more, I dunno

Bending Figures. sorry for the crap-scans
