I dont have much to say because im novice myself too... But yeah you might greatly benefit from doing your studies with ink pen or reduce using much of lines - this is what helped me. And more of timed practice - 30sec - 1 minute poses will help you draw more loosely(i do 10-15 minutes of these a day)
I also like to watch Vilppu or any cool big artists sketching process (new masters academy channel has some free demos)
Hope it will help you a bit :)
