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.
When taking pictures outdoors, one of the biggest challenges is realizing that you are surrounded by scores of photographic opportunities. To appreciate just how much there is out there, take the 20-Step Challenge. The 20-Step Challenge used to be one of my favorites when I went to school and was first learning about photography. I hope you enjoy it as much as I did.For this assignment, go to a park, a botanical garden, a forest, or another outdoor location (even your backyard will do). With your camera at the ready, take 20 steps, stop, and then find something to take a picture of. Get creative. After you’ve taken a picture and are happy with the result, take another 20 steps and find a new subject.