How to be better at writing or drawing than 95% of the population

Very simple

Do NOT say I can't.

Just do it. At this point, you are already better than the vast majority because they *believe* they can't and so they won't even try.

Do it again. You are improving. Trust me, it may not be obvious at first. But it's true, every time you work on a skill, it does improve.

Keep at it and know that you are a creator.

That's it.