Growing up I never had any support for my art.
And I stopped drawing MANY times. Even in art class, I had the teacher tell me they didn't care for my "style". (which at the time was anime)
So I received no help from her either.
But some years ago I had joined a website called Deviantart, it's great art community!
People there, have helped me to because the artist I am today!
Not to mention you can find tutorials on ANYTHING.
My art improved drastically once I started studying tutorials and practicing with their help.
Remember, not to push yourself too hard, or you can end up really disliking your work.
Take breaks when needed, and draw/practice/color whenever you feel the inspiration to do so.
And I only took art classes in High school. (I've been out of high school for 5 years)
Allow me to show you some of my art. <3
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Art from when I was in High School:
Art from me now:
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I'm not saying classes can't help you, but I'm just saying that they are not required for you to become a "better" artist.
The main key is time and practice! <3
Even with a mouse! ;3
I do all my pixel art with a mouse:
Even with using the mouse, it just takes time and practice. ;3
And there are some amazing artist on Deviantart that drawn using only a mouse. Even sketching with it. (which I can't do)
From what I can see, your art is really good! Don't give up on herself! <3
No matter how long it takes! ^^