/ic/ - Artwork/Critique

If you want to Vastly improve you need to cut games completely.
Cut Non Factual Movies and tv shows.
Documentaries and historical pieces all the way.
Work on drawing for 8 hours per day, Read history, Science Fiction or Fantasy when you are done.

Imagination is a collage of all the real things you have seen in your life.
I would advice against working in color and from imagination during this period because you would be best served with building up visual library through reading and documentaries while learning to express form through a medium where you arent confused by colors.

But you could just watch some proko, do a couple of games of league of legends and 30 min of gesture drawing and call it a night.
Cutting away games and social ties should be easy if you really want to improve.
You can game and hang out with friends when you are as good as you want to be.

I meet a good group of friends two times per month to play dungeons and dragons and they know I'm busy with my life and studying art the rest of the time.
It's a choice I made and I don't regret it.