Hey guidcs, thanks for dropping by, sorry for the late replay.
I think overall you have done a good job so far. Here are some points to keep in mind when you are doing a longer study.
Brown line - The Hair shape is very useful to include when accuracy is important , it is almost straight here and can help you to check if your arm is in the right place.
Red Line - We all have a tendency to make a line appear more curved than what it in reality is. If you look carefully, those two lines are almost straight.
Yellow and Orange line - Look for the overall angle of the leg (yellow) and then you can add the other shape (orange) to obtain better accuracy and control.
Blue shapes - Make better use of the negative space as an additional tool to help you check if something is wrong and to help you positioning things correct.
