Hey Will, looks good. I would recommend adding more climbing structures, ie wood, branches etc, although the frogs you've got (which look to be green and golden bell frogs, Litoria aurea) aren't as arboreal as other species so you don't need to overdo it. I would also add some plants, Bunnings, Mitre 10 mega etc stock a good range of small potted ferns and other plants which look quite nice. This just gives the frogs a few more hiding places. You are also going to need to make yourself some sort of secure lid, as frogs are excellent escape artists and are sure to get through the current one you've got. And a light will also be benificial if you can, as they require UV light and enjoy basking. Just make sure it isn't so close as to dry them out or burn them.