Very quick and dirty sketch of a pill box, to explain the goal of the exercise. The inspirtion is the project submitted by Michelle Morgan. The sketch is not complete, and the proportions of the compartments are uneven (inaccurate), but it shows the idea: sketching all the edges that are visible, as well as all the edges that are hidden behind the material, so that we see the wall thickness. 
It turned out as a kind of waffle... I'm Belgian afterall :)
The little pictograms are probably on the lid, right? So, I'd have to place them as well, but that would have made a very crowded sketch...

@Michelle, I hope this clarifies the assignment. And thanks again for your project, and for the review!