This week's word for the "Three Creative Studios" challenge is track. Searching for a suitable Creative Commons image was interesting - the choice was dominated by sports cars. But I liked the potential in this image - the change of scale between gear wheel and bike wheel is the kind of thing I want to develop. I don't think I'll be doing a lot with it - a bit of judicious cropping and some colour changes to highlight the main elements and I could be done.
Chain by Hagbard_