Botanic Illustration of a Sunflower seed head...in progress

I am taking an ongoing Botanic Illustration course and have just begun my second year. It is the most amazing experience I have had since I am a nurse by trade and had not taken any art classes in my life until this one. I work primarily (almost exclusively to be honest) in colored pencil as I am "drawn" to this media for some reason. These are some photos of my current drawing in progress. I hope to have it finished in time to submit it to a local Nor Cal ASBA Exhibit for seed pods...we'll see how it takes shape over the next few weeks.

 This is a close-up photograph of my subject: a sunflower seed head in various levels of decay.

This is a close-up photograph of my subject: a sunflower seed head in various levels of decay.