Door Knob Challenge

This is my drawing for the door knob challenge on Everyday Matters, Danny Gregory's Yahoo group. I have been drawing with his book Creative License for a couple of days. I am finding it hard to see the negative space, but I am working slowly through the book. I tried the chair, and I began to see the negative a little, so I tried a table. It's hard for me to draw the shapes of the negative, but I hope to get there!!