Thanks so much for the kind and helpful feedback! I really appreciate it :).
Yes, I'm not an Artist, and i also try to use references, maybe you noticed that the wave and tornado look alot different from the rest of the sprites, that's because I used a reference there. Thanks for the tip.
Also, I'm really trying to improve in art, this doesn't look good, but some of my past games look like...well, let's not talk about that XD.
And thanks again for taking so much time to write this review!
Good luck with your future games! :)