It needs some more foliage. Have you considered live plants? A schefflera would fill some space in the bottom/middle, and you could get a large pothos and wrap it around the sticks and vines you already have in there.
It’s a great start, I recommend more plants (live is better) also. You should look into a mist king or climist as well, this will ensure the chameleon gets enough misting. A linear T5 bulb for UVB is best too.
It was all pretty well covered above. Live foliage, an automatic misting system, linear UVB, and some horizontal branches to allow your cham to settle in the temp and exposure of their choosing.
What size is the enclosure, lots of people don’t realize how much they move around but I would also recommend adding a lot more of Everything lol more hiding places fill the enclosure up, more branches.