Lunch Break at last!

I've got a ReptEVO 600 Glass Vivarium not quite the tanks I've seen creating these Palidarium's.
I own 4 FBT's, and at the moment i have created a garden like enclosure, filling the tank with substrate and adding a pond. i have plenty of live plants which i purchased from ebay - Houseplant, terrarium items in Terra World Tropicals store on eBay!

Anyways, im debating whether to go with foam for the background or with epiweb? im considering epiweb because i dont really want to ruin my tank, i know people say foam is easily removable but.. i dont have 100% confidence in it.

Although i found this on youtube yesterday - Making a Great Stuff Background - YouTube

I want to aim to either create a well planted rainforest or riverbed, maybe a rainforest riverbed! haha its been decided. Making it look as natural as it possibly can is my aim, im going to the forest this weekend, to gather some moss and logs etc. but what i would like to know is, when i gather moss from the wild they can carry alot of insects how would you guys tackle this? and also logs from the wild, would you let them sit outside for a while to air out and see whether the insects leave or just go for it and place it in your tank?

Also any other freebie tricks you all have up your sleeve to create the perfect tank?

Thanks for reading and i look forward to hearing all of your replies!!

HAVE A GREAT DAYYY!