And make a lot of stuff.
You'll find yourself habitually doing certain things that you just prefer to do as an artist or as a technique. You won't find out that you have these habits until you've been busy discovering yourself. Don't look 'forward' for your trademark because it will be baseless. You move forward and look back to see what trademark you happen to have discerned for yourself.
You don't have to be limited by those trademarks either. You can let others discern them for you.
If you are asking yourself how artists seem to stand out from others, it's not necessarily because those artists sat down and chose their characteristics. It is often the case that when they are making tracks, and trying to do their best to carry out their vision, the limitations of their tools and the methods they've implemented through experience is what makes their sound.
But chances are, they've stayed busy constantly working on new material. No fucks given about their signature.
Edit:
https://www.ableton.com/en/blog/team-su ... n-numbers/ I think this is an interesting story. I believe these people are simply problem solving, and although they are all in a similar social group, their identities come off as very unique because of how they approach problem solving. Most importantly, with a time limit for their game, they don't sit there with reluctance or regret. They just go, they finish, they succeed or fail, but they keep moving forward.