Welcome to the forum . This is a great place to find ideas and help if you need it. We love to share pictures and stories here.
Just a thought, but firebelly toads are a great starter toad/frog. They love the water, are pretty, and they are quite entertaining to watch.
If you like them, I would scroll around here and look at everyones firebelly tanks. There is a section on terrariums and vivariums here.
(Is using aquarium gravel with frogs, use it only under the water section and use larger rocks on the land section. This is so your frogs/toads do not accidentally eat any rocks when chasing their crickets. Just a little tip for you ).
Hope you find lots of fun ideas. You're going to end up loving the frogs or toads you decide to pick as much as we do. Having some fish tank experience is very helpful. And just wait, if you're looking to build a live tank....the challenge has just begun. I'm betting you'll end up loving the designing part. Waterfalls, plants, cool ledges...it's all just an idea away .
Anyway, welcome! I hope we can encourage you as you build .