Live plants and waterfall

Hey there guys,
I want to build show tank and put there 2-3 female leo's, I want it to be with rocks and roots as they do come from somewhere at the dessert but also I want few good looking plants + little waterfall with a lake so they can drink \ bath there and just it to be beautiful natural tho I don't want my leo's to not feel good from this. Is it okay to build a waterfall at the leo's tank or it'll make the humidity too high for the leo's?
If it is doable I might add few cherry shrimp or guppies depends on the mini lake i'll build..
Also, what good looking common live plants safe to use with leo's? I didn't find any safe list out there at Google... I want easy to care for plants that don't need special bedding or conditions that might harm the leo's and of course safe plants for them.
*By good looking I meant not just green \ brown plant but also beautiful blooms or something, hope you guys understood me:rolleye2: