A painting, of any nature, has value because it is a creation, regardless of who made it, at what age, regardless of style, working method, etc.
It doesn’t matter that you are 70 years old, that you are 100 years old, that you are 3 years old. Once you’ve made a painting, it has value, however small. You bought a piece of paper, painted something on it. It is a work of art, it has value. Either she and a lion, or she and 1 BAN. It’s not zero value, you can’t pay for painting.
The value of a painting to independent painters is given by the artists themselves to independent painters. In the case of painters affiliated with a gallery, the value is given by the galleries. And generally they also set the price of the commission he takes on each job.
Galleries generally take well-known painters under their wing. For those who don’t have a name, they can try to sell their paintings on various websites, or Facebook groups.
You never know where the rabbit will jump from. So no matter how old you are or how talented you think you are, it’s important that someone sees your paintings so they can pay you for them. If no one sees them, no one will know about them.