Charcoal Drawing 2 (In Progress)

My new project is very similar to my last as I must reflect upon the shadows cast by light and fillin in with a charcoal pencil. I feel like my project is currently approximatley 30% complete. I am currently drawing a wheel-like object with three candlesticks surrounding it. I feel like the majority of my success has been in the wheel due to the fact that I am having difficulties capturing the shadows cast on the candlesticks.