Now we are almost at the end of this journey! 
At this point, you may start thinking about whether you want to add additional features to your terrarium. Most of these things are just suggestions, but they can be very useful. 

I would recommend that you add a waterfall system, which is shown in the "Tips" section, or simply refine any special details you feel need a “touch.” These may include a small uncovered part of the spray foam. Try to fully cover all of the spray foam, as an uncovered space may result in humidity affecting the layout.

Now just wait until there is no longer any silicone or chemical smell, and you may start adding additional decor till you feel it is finished and ready.