Advice

I think, if you want to improve, you should be:

  1. Playing often 
    • That's the most important thing.  Once you are doing that, then try:
  2. Doing a bit of study of (a) openings, (b) tactics, and (c) endgames. 
    • I seem to remember there are some fine books about these things for juniors.  
    • Study can be reading books or doing puzzles or watching videos.
    • Once you are studying as well as playing, then start:
  3. Writing down all your slow-play games (and others if you can), and then:
    • Going over your games, (a) by yourself, (b) with another player, and/or (c) with a computer
    • Checking your opening moves against a book or database - who made the last 'book' move

If you aren't doing any or all of those things, you won't improve as fast as you could.

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