I'll jump in with a few things; Have you ever looked at pics of planted tanks.? Most look better when plants are planted in groups. I don't want you to take offense, but yours is not the most attractive tank I've ever seen. Take a look at photos of planted tanks, examine the layouts, see how the same stems are grouped, how shorter plants should be in the front, medium plants in the mid-ground and taller ones (like you have) in the background. It conveys a sense of depth. My first attempts at planted tanks looked very similar to yours - you'll have some setbacks, your plants will die, some will survive and even thrive - those are the ones you focus on. When things are growing and you can see the growth, you get a sense of accomplishment that makes you want to continue to do this. you cant expect miraculous growth straight away - plants take time to adapt and adjust to your tank, lighting and water chemistry - it's called "transplant shock". Patience is definitely a virtue when you first set up a planted tank.
What kind of lighting do you have? What's your photo-period? can you get more plants? Starting a tank with as many plants as you can put in is usually a good way to be successful and to combat the inevitable algae outbreak. Did you get any advice from your LFS? if so, what did they tell you? Are you adding any ferts?
I know these are a lot of questions, but the more of them you can answer, the better we can help you