Don't be bashful! If you want comments, give comments. You don't need to be an expert photographer to express your opinion about the work of others. You don't need to go into great depth. A simple remark about cropping, composition, color, subject matter, etc. can be of just as much help to a budding photographer as an in-depth critique.
Look for an environment in which a natural burst of color occurs to create an image that contains a major, dominant color with minor, secondary colors also in the scene. The main element in the composition should be one color, with the second and third colors in the scene present for a second reading of the image. Post your favorite image to the Web site.