Thanks everyone! I'm mostly pleased with it, though there are still some things I'm looking to correct, but for now it's seems to be working, lol...
So much more quickly than step 1, here's...
Step 2:
I spent a lot of time looking at pictures of other people's terrariums here on the OrchidBoard, in google images, and any other places I could find. I took notes on what I liked about each one in an excel spreadsheet and any thoughts or suggestions that were listed with the build. I also provided a link back to the page so I could see the image again and again while I formulated what I wanted to see.
Originally, I wanted more levels and to utilize those levels for planting orchids on and then use a few branches to extend up to the top of the terrarium to plant on as well. Here's the eggcrate model I had originally built.
However, it was way too symmetrical for my taste. I could have changed some of them to cork rounds or halves, but I still wasn't quite satisfied with the overall look in my mind's eye.
So needless to say, there was a lot of thinking, looking around and imagining going on. This was also the time I started researching air flow and self-automated watering systems to ensure the fact that I would have to do minimal maintenance on it once it was completed. (This still has yet to be determined by the way, lol...).
While doing this, I also looked at various materials available to construct a background, the various styles other people used and materials they incorporated.
After much deliberation, I opted for some earthy areas but also wanted rocks. I also wanted a variety of wood materials, so I used some cork rounds cut in half, mopani wood and a pressed cork board for terrariums (the later two you can buy at any PetSmart or pet store that carries terrarium supplies). As I was looking for particular shapes, sizes, colorations, textures and overall designs, I did not purchase any of these online as you never know what you will recieve. I wanted to see it before I committed to a purchase.
The mopani wood was chosen because other woods can grow mold very quickly (based upon some other people's comments). However, another good choice may have been driftwood as it is very used to being in a watery/high humidity environment. But I liked the overall look of the mopani the best.
In all honesty, I over bought on the materials - but I guess that just means more materials for playing with later, lol...
I think the biggest thing I learned here was to not just settle for a design because it was your first or your 10th design. Keep going until you truly feel it is right for you. Once you think you've got it down, step away from it for a few days and don't even think about it. Come back and view it with a fresh pair of eyes and dissect it in relation to what you originally wrote down you liked and disliked about other designs you've seen. But overall, have fun and enjoy the designing part and let your imagination go. If you construct it by not permanently attaching anything you can always tear it back down and start over, lol...
To give you an idea of at least one design I was considering, here's a picture. I did not like this design because it did not have room for my waterfall. The waterfall would either have to go over or under the mopani wood piece, neither of which I liked. However, with the wood sitting like this it would have allowed for a lot more air movement as well. Just a few of the things to consider when playing with your design.
One big thing that I learned here as well (thank you Pluerothallis - if I got your online name right) is that bigger/thicker pieces of wood like the one I am currently using not only block air flow but they also limit the amount of space you have to plant on. I am still considering changing my current piece of wood out with smaller ones or repositioning it somehow inside.