I can't tell exactly what plants you have in there since i cant enlarge the pics. If you could list all the plants that would help. I do see what looks like very nice crypt wendtii, and maybe chain swords?
Anyway, from my view it looks like one of your main issue is the layout of the plants, since they are all grown in you should have a good idea of the size of the mature plants.
That makes things a lot easier for you, when you come to rescaping try to layer the plants in terms of height, have the larger ones toward the back and the shorter up from. I would also advice having a little bit of exposed substrate to mix it up a bit.
Depending on what kind of look you want from your tank, if you want a more natural look remember not to group plants in a species only section, try to have a mix of plants spread throughout, also avoid symmetry as much as you can, nothing in nature is perfect! (or at least humans modern perception of perfect)
Lastly, you have a ton of gorgeous plants, a lot of which you will be thinning out and trimming up, so learn how to propagate each of the different plants you have. Then most importantly of all, DON'T throw away any of your trimmings. List them for sale on your local craigslist or even give them away if you don't care to put in the time to sell them. People are always looking for cheap plants and I would take plants from a fellow hobbyist over a chain store any day. I list all of my plants locally and online and sell them every now and then, certainly isn't a business but it might get you a couple bucks here and there that you can spend on the little extras you need for your hobby.
Hope this helps.
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