My actual first ever step into game design. A long time ago, back in 2009, I tried my hand at mapping for Team Fortress 2 when I cam home from working at the architecture studio. I basically self taught myself how to work on Valve’s Source engine with the help of the Valve Developer Wiki and a great community TF2Maps.net . You can read extensively about the full design and dev process here at my old thread.
Looking back at it, I realize how I actually ended up passing through all the stages of a level design process and this was at a time before any formal training or education.
Below is a visual short-hand of the design process.
SECTION OF BASIC CONCEPT
SKETCHING OUT FORMS TO FOLLOW FUNCTION
4 Years Old to the Day – A post from 2013.