I saw this TED Talk by Josh Kaufman a while back called The First 20 Hours – How to Learn Anything. The takeaway was basically that it only takes 20 hours to become reasonably good at something. Pick a specific skill you want to be good at. Put 20 hours into it. See what happens.
I did just that over the past week without realizing it. I spent between 20-25hrs on this portrait of Newt Scamander from Fantastic Beasts and Where to Find Them. Take a look.