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.
Take a picture of someone or something near a window in diffused light without your flash. Remember the information you learned in this chapter about the difficulties of metering for window light. You want your subject to be well-exposed, although that might mean having dark areas in the room. Diffused light gives a soft light to the subject. You might also need to adjust your white balance as diffused light can give off a blue or greenish hue to your images.