Looks pretty good, I had a hard time spotting her down there next to her rock arch.
One thing to add is a nice climbing branch that spans the tank or at least part of the tank and is propped up so Toothless can climb up, they love to climb branches.
Be careful of it being near a window, if the sun comes in, even with shedes down it can cause too much heat during the day. And can you list your exact type , brand + watt lights you have ? Pics of them as well , it's critical to have the proper lights and the pet stores sell a lot of useless lights .