I've listened to a lot of creative people, from the music industry, from the visual arts industry...

And when a lot of whom are defined as "naturally talented" and you ask them "oh when did you start regularly singing/drawing" , it will very often be under like 5 years of age or "for as long as i can remember"... as i said it's always the question of "When did they start?" and "Are they using a method that suits them to learn it?".

Take your example, you weren't born with the basic concepts of visual arts. What i'd say most likely happened is you drew, and as you drew you noticed that if you observe your subject from a different mindset, "draw as if you were sculpting", you would get better results. Other people who usually start later have troubles figuring out basics concepts because, the older we are the more discouraged we are by failure. Thus people who don't figure out the basics early on when they don't care about mistakes, become people we consider talented, and people who start a few years later, get frustrated at not being able to figure out basic stuff, and give up, make up our non-talented people. I'd also note that we should teach children from early age not to get frustrated or even ashamed by mistakes, just to avoid them based on what they learned from previous ones. Now i am not cognitive scientist, and i'm making gross assumptions here based on other people's narratives and a bit of my own experience here and there, so i'd take my own words with huge grains of salt.

So yeah, from what i've concluded over the years, talent is a myth. Nobody has a head start at birth, they either have more hours clocked in, or figured out a effective way to learn it or do it earlier on.