I'm an artist and a tattooist, and because this is anonymous I'll give you my tips.
You clearly have talent, and a great eye for colour/mark making, but you need to take your work from amateur looking to professional.
Here goes -
Most artists trace stuff, no one told me this in art school, and I really wish they had. It's not cheating, if you are learning to draw better alongside it. It saves time, and nothing ever looks out of proportion then.
Always use a reference image for figurative work, or figuration within an abstract piece.
Draw something EVERYDAY, and do a life drawing class weekly.
You tube videos are your friend.
Always use the best quality material materials, instagram is full of artists working on shit paper, with shit paints and it lets them down.
I apologise if you already know some of this stuff - but although I'm a trained painter, I've had to work a lot of it out for myself in the last decade.
Finally you are so lucky to have this creative place to retreat to, I can't imagine my life without it.