Giant Periodic Table

This is a huge periodic table I decided to make thanks to my somewhat irrational loves of chemistry and Minecraft. It is a flat table with the chemical symbols of each element standing on its spot. Each symbol has something to do with its element. This is very rough, but I'll add signs with descriptions in my next version. And please, tell me anything I'm missing or have wrong; this is only my first submission, so I need all the criticism I can get :)

To do:
Signs for descriptions
Chests with items
My take on Jinx's Minecraft periodic table.

By the way, I'm using Rhodox's Painterly Pack (http://painterlypack.net/) for my texture pack.

Additional Notes

I made this because I like chemistry, because I have way too much free time, and because I haven't seen anything like this before. If this looks too close to someone else's work, tell me so I can correct it.