Well here is something to get you started, Lore-Wolf. Feel free to change it however you want.
Scene 1 - Gnome introduction
Setting : This scene will take place in a gnomish laboratory. Set up a bunch of machines around the lab and have some gnomes working on them. Also make a sectioned off room that is 'top secret'. In that room add in some sort of advanced technology. Like a big robot or something. Dont just add in the siege golem model, cause that would look lame. I recomend that you put your construction practice to the test and build some sort of robot.
Make a small pile of stuff put together, that kinda looks like a person, but not really. Put it on the floor beside the gnome. Open on that scene. Put a stick or something in the gnome's hand as if he was about to add it too the 'man'. Basically this scene would show that he sucks at engineering and building stuff. Also give the gnome a pet chicken. It would just be funny and i have some ideas for it later on.