Hi Lele,
I decided to come out of the leaf cham closet. I actually did have three leaf chams about two years ago but it's not a happy story so I try to push it out of my mind. I cant even talk about it now without getting upset.
I had these before I had ever heard about the cham forum so I was on my own with them. I don't want to go into what happened but I will give you some advice on how do's and don'ts.
Get a small see through glass bowl(sides about 2 inches high pyrex makes them for baking) and position a few twigs over it or small thin flexible vine and make a little vine bridge over the bowl. You can put little crickets in and the chams can crawl on the vine and shoot them right out of the bowl.
This way the crickets don't lose their dust by crawling through the tank. They also don't eat feces and then get eaten by your chams, and your chams can find them easier.
Get an air exchanger. It runs with an aquarium pump and it pumps moist clean air into your tank. It circulates the air and cuts down on URI. They are also pretty cheap.
These guys do not like it very warm and overheat easily
Be careful with vitamins and calcium. It is very easy to overdo it with these guys.
Only mist with warm water and it's better to not spray on the chams just around them on the leaves and tank sides.
I always wanted to replace these guys and get more but I want to see how you do with them first. I was probably just inexperienced with them and I got very bad advice from the place that sold them to me. Also finding info on them was very difficult. They were rampholeon brevicaudata and I think some day I may try again with them.