“Process” of making a DIY cork background

This is my "process" for setting up a terrarium background. The entire enclosure is 48"L x 18"W x 36"H, there's a divider in the center to convert it into two enclosures. They're 'Clear Front' enclosures made custom for me by Tamura Designs.

Now, I say "process" because I failed to capture any photos of adding hides or adding plants (sorry).

Preface: Because these enclosures have a completely acrylic front I applied a pre-mask before starting.

Image 1: I start by playing Tetris with cork flats. I aim to leave minimal gaps and try to use primarily flat pieces.
Image 2: Great Stuff 'Pond and Stone' expanding foam is what I prefer— the black color blends well and it doesn't expand as much so less carving.
Image 3: Enclosure is rotated onto it's left side and I repeat the steps in 'Image 1'.
Image 4: Repeated again for the second enclosure.
(Not pictured: Repeat process for right walls)
Image 5: Once all walls have been foamed and the foam has cured completely (~24-48 hours) you can begin carving. Note: if the foam isn't carved you will have difficulty applying silicone for a layer of substrate/moss. Gorilla Glue may negate this need but the result will be physically harder.
Images 6 & 7: Both enclosures post carving.
Image 8: Sheet Moss from GlassBoxTropicals is applied with silicone.
Image 9: Rough hardscape of branches for one enclosure. (I'm sorry I didn't take photos)
Image 10: Completed enclosure in 'Image 9'.
Image 11: Second completed enclosure.

Final note: there is a technique to "mould" the foam while it's partially cured that lessens it's expansion. If you choose to apply substrate to the foam immediately after application this may be ideal as carving is tedious. However, in my experience, the coat of substrate you apply tends to fall off easier and faster than if you use silicone or Gorilla Glue. Second, if you do interfere with the curing process the foam cures differently. Instead of the result being a tough foam material it actually becomes extremely flat and stiff, resulting in "foam" you can't carve. Doing this method resulted in me having to literally break away shards to "foam" and required an entire new can of foam to repair.