Worldbuilding is a cornerstone activity for writers and gamers alike. Without it, our characters would not have a place to live or props to tell stories. This short primer will show you how to make a basic planetary concept with just a few basic ideas.
One of the first places to consider starting is with a species, then a planet, and then possibly their language. You name them, then design small aspects of each of them.
With species, start with the basics and get a clear vision of them in your mind. This can be anything from skin tones, eye colors, legs, arms, hair colors, and if they have unique abilities such as tremor sense, telepathy, or empathy. Are they a matriarchal or patriarchal society? Do they value gender equality? Do they have deities? What is their main cultural focus, like music, education, art, mining, etc.? Once you have these, you can move on to creating their planet.