Practice towards what goal? To be the next Banksy? To be a millionaire? In my experience, practice has a limit. After a lot of hours I can code decently, and my stuff is working, but one of my developers which is in his twenties can outperform me with quality and elegance.

When you have a talent and a habit/routine, you can keep your form for years.

It is like muscle training, every day simple routine is more effective than two days in a week in the gym.

And my goal is to stay in shape and create something meaningful for myself, not to win the Art Olympics:)