Summoning Big Bertha
This is the configuration you'll have to build to summon Big Bertha. (The Block in the middle is a "Mechanical Soul Sand" block)
Main GUI (Human selectorGUI)
When you respawn or enter a world for the first time this is the first GUI you will be introduced to. Here you have the options to either: Use the Legacy Race GUI, Move the race selection arrows to better support JEI or the secret race GUI.
Dragonborn selectorGUI
When selecting a race you will be greeted by this kind of menu. On the left side you'll see the races pros and cons as-well as special abilities etc. (The arrows at the bottom will take you to another race).
The Runic Altar Setup
This is how you set up the Runic Altar for it to work and make sure to fill the pillars with fuel! (lapis)