Very good drawings. I think you have good proportions, a balanced use of straights and curves and some understanding of the 3d form. I think you should try to draw some skeletons from imagination from a different angle. And you could also try to draw skeletons in a few different poses from imagination. This is a great way to find out how good your understanding of the flow of the bones and their 3d volumes really is. Hope this is helpful.

Hi @hannassi, nice drawings! These look carefully measured. Good job! - In #1 her left (our right) arm is too long. Referring to the standardized proportions can be a help (Human Proportions – Average Figure for example). According to those the upper arm should be about the length of the ribcage. Another hint is to look at the other arm. Are both arms the same lenght? The bilateral symmetry of the body is important. - In #2 the torso feels compressed. We're lacking the space between the ribcage and hip. When drawing, think of the figure as a series of shapes. You have the Head neck ribcage waist hip upper legs lower legs feet shoulders upper arms lower arms hands Make sure every shape is there. Having a clear idea of the pieces, can make the process easier and more efficient. I also think it will improve the drawing, since it will make priorities clear; you emphasize the major shapes instead of the secondary or tertiary shapes. In drawing#3 you have a strong prism like shape at the hip which seem to resemble the gluteus medius, but you don't have an indication of the ribcage, which is a primary shape. The gluteus medius is secondary. Emphasizing the secondaries can tear the composition apart. I attached two hand drawings that I did where the secondaries dominate (I'm working on this myself). The hand to the left works a little better than the right, since the secondary shapes dominate less. -In #4 the figure might have been drawn too wide and chubby. I hope this helps :) Keep up the good work!