Hey Palmer, I have some suggestions for your character designs. Primarily with the tall character, but the critique will apply to the shorter character too. First of all, when we make a character taller then others, we don't just make the legs longer. This gives a real unnatural feel to the figure. We have to make everything bigger in relation to the size of the head. The head on this figure is as big as the torso and bigger than the pelvis. Also, remember that the face is 3 dimensional, and has form. The way you drew the features, like the eyes and eyebrows, are flat and don't suggest form. I did a sketch to show you some of the things I'm talking about, I hope it helps :)