In order to make our assets, we first need an idea of what we want and need for the game. Not only are sketches useful to give a better idea of how we want stuff to look, but you can also put this sketch inside Blender's background if you find this easier to follow the idea.
You can sketch in your drawing software of choice; we will choose by default GraphicsGale (http://www.humanbalance.net/gale/us/download.html). The freeware version is more than enough.
Again, we are only going to focus on the gun in this entire chapter so that you get a better idea about sketching.
This is the model we made for the gun and it is a somewhat simple and alien stylized model. Now let us move on to the next step! The exciting part is coming!