Layering plants creates a lush environment for your fish. If you like this look choose from plants like these. Start planting from the back of your aquarium & work forwards. 
1. Start with a background of bunch plants. These will need some maintenance. Trimming & replanting, replacing if they start to look thin. 
2 Add taller Swords and Tiger Lotus for highlights. Nestled in front of the bunches. 
3. Add Crypts and Chain Swords towards the front.