My entire artistic experience began around March of 2014; so I guess for a total of a year and a half!
As for the amount of time I spend drawing daily, it can range anywhere between 1 and 6 hours. It really depends on the kind of day, and I really like to finish drawings in one sitting.
As a side note, I’m a very slow artist. Just making a sketch can take me an hour or so. But the way I see it, it’s all worth it!