looks good so far, keep up the good work! if i may, here are a few things i would suggest to you:
1. before you get too many plants deeply rooted in the substrate, you NEED to slope the substrate back, so its deep in the back and shallow in the front. I would suggest using an old hotel room key or expired credit card for the job (they also work well for scraping algae off of glass, theyre really very useful things, lol). I know it sounds unnecessary, but you will be really amazed at the difference it makes.
2. make sure that you put all of the tall plants in the very back, the shorter plants in the middle, and the carpeting plants in the front. It will give the tank the illusion of more depth, and you'll love the way it adds to the overall feeling.
3. maybe add in some more hardscape? things like driftwood and rocks covered in moss or anubias or ferns look really cool in any tank. Try to center the piece of DW that you already have in there and moving it around to see where it fits best after you have sufficiently sloped the substrate.
4. you may want to buy some friends for your pristella tetra. all tetras are schooling fish, and will live a LOT longer if there are more of them around. usually you should have at least 6 schooling fish if you have any. obviously don't add too many fish too fast, but once you're tank is cycled enough to handle more fish, definitely find more pristellas, and maybe even another neon or two.
btw, what is that substrate? its really so clean looking, it makes the tank look really cool. You've done a great job looking into this stuff and finding the right substrate and lighting and all. keep it up!