Try starting with big plants at the back and small plants at the front.
Try not to use more than 2 to 3 different types of plants, to ensure consistency.
Suggest mini chain sword (mini sage) at the front and hygro at the back to start with. Make sure there are fertilisers in the tank, root and liquid. And ensure there i enough light.
Once the tank is growing well, try other plants that you may fancy. Be warned, not all will survive! Look for the other listings in the plant section on easy to grow plants.
I would not put anymore driftwood in considering the size of the tank.
Hope this helps. 8) 8)