While this subject meets the challenge criteria, it seems to lack compositional interest and the focus is slightly off. A less busy background and better lighting may help and maybe having the subject slightly off center and at a more interesting angle could help with the composition of the shot. Hope this helps a little.
Good texture and simple easy-on-the-eyes color. This photo will benefit from a few enhancements: 1. increase the contrast. 2. Follow the rule of thirds in your composition. 3. Side lighting will show the texture more. 4. Better focus.
The background is a little distracting. It would help you to adjust the colour levels so that black is really black - you'll find it makes all the difference.
This is a terrible shot. I don't think you have really woked on it. C'mon, you can do better. Move the keys around and look from different angles. I am sure you can find a better angle, background and arrangement than this. It's not even in focus. Did you really try for this?
focus needs a little bit of work, everything here is blurry.. try to avoid putting things in the dead center of the photo - use the rule of thirds, or at least take it from a more interesting angle. the background needs to go, too.. stick with solid colors, so they don't detract from your focal point