here i'm starting to use a little shadow.
Because the animal moves very quickly sometimes i try to use just a part of the pose that my eye registers, like say the front arm is in front of the other and then combine that with freestyling the rest of the pose.
here's i'm starting to have fun with situations and a little acting with the pen.
Happy sketching
Nate
I highly recommend Ken Hultgren's books. They were really inspirational for learning more about anatomy.