Everybody knows “practice makes perfect”, right?
The thing is, the changes tend to be so gradual that you don’t even notice, and you might not even realize how much you’ve improved.
This is one of the things that fascinates me about web comics with archives that span years. You can actually go back in time and watch the artist/cartoonist get better month by month.
You’ll get good at things you do often, for better or for worse. I still sometimes dream of bagging newspaper for delivery and loading BIC pen-making machines.