I'm sure you will get better advice, but I would recommend having a horizontal branch at the top for a basking spot as well as some more branches or vines in the middle as "highways" for your cham to get around
I have an Ambilobe Panther (the one in my profile pic). I don't really have any solid ideas yet, but I'm thinking I want something with Climbing ropes, some sort of branches and maybe a fake tree or something for foliage. Do you have any ideas?