Join Date: Jul 2010
Location: Outside Philadelphia, PA
How you aquascape your tank is mostly a personal choice. Everyone does it differently and there is no really right or wrong answer. Here are a few things I'd do, but don't feel bound to doing any of this.
Get more plants. Initially go for ones that are easy to keep. You can remove them and get other, more exotic plants later. Keep in mind that most people looking at your tank are not going to be planted aquarium people, and will have no idea about the plants you have in there. Most of my own plants are in this category. I mostly have some java fern variety windelov, jave moss, anubias nana, and cryptocoryne wendtii, and some dwarf sag. Most of these plants are in the "almost impossible to kill" category. Some in the hobby might even consider then weeds (grin).
Get a few bunches of the various stem plants and plant them so you have some cover. These are used to help keep algae down and show off a lot of green initially. Note that some of the plants I listed above are slow growers. Once the other plants fill in, you can remove the stem plants if you don't like them.
Give your tank time. Don't try to rush things. Once you get the tank established, live plants reproduce, and you'll have a massive surplus of them.