At that young age I was mainly influenced and inspired by my older sisters, who were 17 and 19 respectively. I was, of course, not the best, but I showed great interest of the subject. For the next 6 years or so I slowly gained a style and got a tad bit more into it. I'd mark this as when I really "started" art, since I began to invest more and more into it.
I got my first and current drawing tablet in mid 2016. It took me 7 months to finally get used to the way it worked, but it definitely marked the start of my digital art career.