Tone & shading

For this weeks task we had to draw two object, (that were both black and white) with tone and shading. This task was set upon us to give us a greater understanding of the tonal range and value of different objects. For my first two examples I used regular pencil and applied smudging to these two pieces. However applying this technique, I learned later on turned out to be a big mistake for adding tone and shading as it ruined the paper and made it harder to work on and I didn't get the same amount of detail as I wanted to. Since coming from college to university, I have noticed a large improvement in my skills, of tone and shading which can be seen in these two drawings here. One thing I would fault about these two drawings, are that the shadows are possibly a bit intense, as the room was very light to begin with. Although I used pencil and smudged the drawings, I still think it retained most of its detail.