Hey there, you have achieved pretty good proportions with your stick figure, and stick figures are a really great starting point, especially when you wanna practice different and dynamic poses. Think your next step can be start learning about drawing things as 3D forms; applying those here, the arms and legs can be cylinders, the torso can be a box, and the head can either remain a sphere, or a box which helps you understand what you are seeing of the head depending on the different angle. These building blocks, and learning how you can manipulate them and rotate them, are the foundation with creating believable drawings, and think ArtWod’s “Intro to Drawing” and “Intro to Figures” would really help!