This setup was given to me for free. I have no experience with planted tanks.
Substrate - Eco-Complete substrate
Stumpy will be placed in the back left corner. I could get a steep slope under it and have anubias round the base. Eventually try to get some moss on it too. On the right I would really like to use the sword I have in the back. Then some shorter carpet up front.
Well you picked the right plants for the light that you have.
So the substrate isn't purple gravel as it appears.
For a slope you could put some rocks under the stump and cover it with the Eco-complete. Rocks are cheap at hardware store.
If you get a sword dont' get the amazon one, for it gets too big for a 29 gallon tank. A good carpet plant is dwarf hair grass