Advice: Can't give advise yet. Still learning myself!
I tried to make sure I gave the fish a friendly environment while still being pleasing to the eye and the decor of the room. Plenty of tall plants on sides that keep the Angels happy, plenty of rocks and nooks and crannies for my zebra loach and rainbow shark to hide and the cherry barbs to play in, then plenty of open space in the middle for the diamond tetras and australian rainbow to swim around. It seems they are all happy. Hey, if they're happy that means they're healthy which in turn makes me happy!