There are actually many kinds of sales methods:
1, free to sell, also known as "send", is of course the fastest. But choose the right person to send it.
2, sell at a low price, of course, also look at the content of the work, the low price is relatively easy to shoot.
If you have knowledgeable friends, you can change this work into something "more attractive" and then choose the right opportunity.
4. If the works are really of quality and value, you can contact galleries, exhibition halls and even museums and sell them while exhibiting.
If there is a channel to know celebrities, you can add money or seal to the original, which also increases the chance of selling.
The above is for reference only, and I have no practical experience in this field.