My writing heavily depends on chopping up my sentences into digestible chunks, often using commas, hyphen's, and semicolons - though doing so, I usually fall into the trap of consisting my entire flow with long, yet, easily read sentences. My sentences in general usually go by a 1 - 2 pattern, sometimes 1 - 2 - 3, or even just a singular 1.
1 - 2 Pattern: "Rising from his seat, Billy met the uneasy tension with his own offset aura."
1 - 2 - 3 Pattern: "In the wake of an aura unimaginable, Billy stood, meeting it's awkward sense with his own."
1 Pattern: "Billy stood. Hoping to deviate the original aura into his own.
Some terrible examples, I know. Though that's pretty much the consensus. What I try to avoid is run-on's, using words I didn't even know until I checked a thesaurus, and using the same "format" of sentences other users have used in their past work. Pattern systems I find simple, though in that simplicity, most of the time, sacrifices major flows.
I tend to make highly intelligent characters with at least one a fatal flaw that can more or less phase out their intellectual abilities or give them an noticeable and exploitable weakness. Arthur’s hubris and smarmy attitude often makes him behave twice as confident as he is actually capable (even when he knows his limitations). Micro-Man’s prodigious scientific aptitude is balanced with having barley existent social skills. Surreal’s knowledge, experience and quick witted nature being countered by his propensity to be overlay selfless and engage in excessively risky behaviours. Etc.
Characters who are defined by some sort of traumatic event from their past, often related to who they are now, and tied to how they got their powers (if they have any).
A general subversion of the "I have superpowers and it's amazing" theme found in most comics. Their powers are treated like a medical condition, instead of a gift, and realistically cope with such a bizarre situation.
I've noticed a lot of their come-ups involve a complete lack of birth/medical records. Isn't quite a major thing, but it's happened enough times across different characters that it seems to be a notable pattern.