With all due respect, the people who are telling you that can screw off. You're art is amazing and you have been making amazing progress. You've really come into your own and your style is solidifying, I think you are doing great.
I believe you've got a really bright future ahead of you and with your dedication, I think you are going to go far with your art career (assuming that is what you want). As long as you are enjoying it and it makes you happy, its never a waste of time.
As always I really love your portraits, I could examine them all day. They give me like Twilght Princess vibes and I just love them (I'm a broken record at this point, I know).
Your knight gives me Final Fantasy Vibes, can't wait to see where you go with that Dragon Slayer concept! Your lions are really nice. Love the energy in them and how you captured the movement and the expression. They really feel alive, excellent work!