Wow! Haven't seen one of these Drawing Jams in a good, long while. Did a slight caricature of the second one and for no good reason decided to try shading and toning the thing in Photoshop. Feel free to crit, comment, and discuss.
Ian: I really like the toned-line hatching. The push in the expression is nice too. I worry that in both poses you're hatcheting into her eyes too deeply and sharply making them not only extremely sunken, but also very close together, so my crit would be to soften that angle from brow to eye to cheek.
noduse: Yep, gotta start somewhere and the practice will do you good. Don't be afraid to do some very simple and loose sketching to give you something to build on. Just finding a center line of ballance from the foot and knee up to the head would have benefited this drawing a whole lot. Also, putting in simple shapes as markers will let you eyeball your proportions before you get into specifics of the form.
Ayame: Yeah, that side on the right does look like it'll be tough to make accurately and still get a good looking drawing. For some reason there's a lot of flattening out happening in your drawing's arms and chest. I'm kind of stuck for why, so I think I'll give that pose a shot also to get a better perspective on what's going on with it.
Phoebe geebees: Beautiful style you've got there. She's like a glass Rastafarian! I love the push in the upper lip and the handling of the hand and foot. That right elbow is drifting a bit, but all in all I like the piece a lot. Ended up checking out your gallery, and I'm digging the push in your style a whole lot.
WRuv: You know, that hand resting on the table gave me a lot of trouble too. Just a really ugly position. Not so much a crit as solidarity on the demon hand. Without that hand it's a very beautifully and masterfully done piece with an almost poetic subtletly in parts of the raised hand, the armpit on the right, the face and the ear.
mcintosh184: Don't give up! Get analytical, start another try, get looser and play up your volumes. It might be time to get a soft lead or even grease or charcoal pencil to get you away from the scratchy sketching and into some whole-arm looseness.
Citizen UNICRON: Very attractive sketching. I guess nobody really liked the second photo's weight-bearing hand. Very nice sense of forward and backward movement on the arms of the upper left drawing.
ShaunM: Nice simple sketch. You got a lot of volume with that rough shading and hilighting.
PaintMonster: Cute take, but I don't think the slight shading and hilighting works with those thick lines. It would be cool to see this with just flat coloring.
walrus: I actually enjoy this one a lot. Sure the face isn't your best, but the figure is competently done with a great attention to volume. I love where you went with the stomach too.