Hammer is the first 3D package/level editor I have ever used. I first started using it about 5 months ago. The first few months was spent playing with and learning it. The remaining time has been spent developing and designing my first levels and environments. I have great plans for some epic levels in the future, so stay tuned.
These are images of my first ever level. It was initially started as practice in reproducing an environment. However, it evolved into a small death match arena for the mod Age of Chivalry.