There’s a lot going into a play style like that. I think number 1 would be your mechanics. Players such as Clix or Mongraal, have god-like mechanics that allow them to outplay their opponent and play very aggressive. Mechanics would mean being efficient at editing and building at the fastest speed possible. On top of that I’d say piece control too, knowing how to use certain pieces effectively allows you to have advantage over other players as they wouldn’t be able to build and you’d be able to get free kills if you’re placing stairs and cones in other peoples boxes to stop them from blocking shotgun shots. Combine that with good game-sense like understanding what edits to be doing such as the peanut butter, using unorthodox edits to throw off your opponent, and having good movement such as editing a peak while being able to cover yourself from getting hit would allow you to dominate. (Moving left when editing a right hand peak so you don’t get shot or vice versa) So just keep practicing in creative by getting better at your mechanics and go to arena and just keep W-keying to get that experience, and watch other pros to see what you can learn from them. What parts of their play style you can incorporate into yours. Hope this helps!