Modeling: legs and feet
If you're happy with the arms, model the muscles on the legs.
Mostly, you can cheat a bit if your figure is wearing breeches and high
boots, because most of the legs are covered then. But it's a good exercise to
do leg muscles.
Model the upper leg muscle with a thick roll of clay. Smooth it
out to the knee.
Model the knee. Just take one or two balls of clay and model these
at knee hight, so it looks convincing.
Turn your model around and model the back of the upper leg.
Turn your figure back again and model the lower part of the legs.
On the front there's almost no muscle, but the shin bone. This
should be modeled as a straight line from knee to foot.
On the back of the lower leg you can model the calf, which consists
of tho parts, with two rolls of clay. Start them on the left and right
side of the knee and work down. The part on the outer side of the
leg should end a bit lower.
If all's well, you'll end up with a hollow part at the back of
Modeling the feet
Feet are done similar to hands. In the models I've made so far,
I was able to cheat a bit because my figures all had shoes or boots.
Boots are fairly easy to do: take a piece of clay, flatten it and wrap it
around the end of the foot.
Bend the end forward. This will make the toe part.
Flatten the sides around the ankle and shin.
You'll notice that, if you flatten it out, the clay tends to accumulate at the top.
This is perfect for the end of the boot. Round this part and you've got a boot.
You can add another flat strip of clay and add it to the top of the boot, near the
knee to create a flap of leather.
I'll work out feet in the case studies when I get to it. Keep looking for models
without boots in the case studies.