Figure 

This skeleton was drawn quite quickly, due to this, the time spent observing has suffered which takes a lot away from the image. The limbs are out of proportion and the curvature of the spine is less than perfect. Paying closer attention to the reference pays off.

Foreshortening 

Figure Drawing 

This image was drawn to show the effects of foreshortening of the human skeleton.
Drawing cuboids helps to define the volume that each limb takes up and also makes recognising foreshortening easier. 
Practise with foreshortening is recommended. 

Still Life - Composition 

The image above has been created to show finer points of composition. Using a more extreme angle, it is possible to see inside the mug and the way light and shadow is affected by the cylindrical form.

Scale is an issue here, and should be kept in check with pre-planning the image.

Still Life - Light and Shadow

This image was created to show light and shadow and how it reacts with shiny/matt objects.

Overall, the general proportions seem correct and the composition shows the scale of the objects quite well. 

This image was completed without observation/references which could of been avoided with correct planning and efficiency when drawing. 

Still Life - Form and Shape

This image shows a still life arrangement from 3 different angles.

The sketch on the left has been chosen as it holds a greater composition than the other two.  The tall container in the chosen image seems well proportioned and would suggest being aligned with the rule of thirds, this however; points out the less consistent observation on the container with the flowers, its lines are implying an odd shape which draws the attention to the centre of the image.

Places for improvement should be ellipses and smooth, single lines/Lighter construction lines.