You can put your cham outside depending on your temps, make sure the enclosure is halfway in the shade so he has somewhere to go if it's too hot. No, you can't put him on a wild plant as it may be toxic. If you bring him outside, do so in his enclosure.
When you post a new thread and before you hit the "submit reply" button you will see a box below that says "additional options," in this box you hit "manage attachments" and voila...you can attach!!