Egg and Tomato Shading

This time the exercise from the book was to draw an egg completely by shading, and not use any straight lines. The only line I drew was for the shadow, I think it turned out pretty good.

The second task was a tomato. I did draw and outline of the tomato which did help, but I don't mind free hand shading. I think overall the shading turned out pretty good, but I was copying from the book and not judging the shading from a live model. I don't know which way would be easier...

An Onion

The concept with the apple and the onion is to try create a round appearance through shading and where the light falls. This can be achieved by the direction, thickness, or darkness of the lines.

I find with the onion I could have made the threads out of the top thinner, and maybe could have added in more lines for contrast. (Actually I probably really do need a lot more lines in there). I did try to get the different directions, but I think creating shade and the spot where light falls is going to take some time and practice.