Aura comes with an editor (editor.exe), which you can use to create your own Aura masterpiece. You'll find instructions on using the editor from within the editor itself.
Unlike the game, the level editor does require a monitor.
To add a new level to Aura (or a new translation of a level you already have), place the level (*.aura) and all its translation files into the "levels" folder. Aura will automatically detect these the next time you play; use the "Open Story" menu option in the game to select a story or translation.
To add a menu translation, place the menu.*.dat file in the "data" folder.