Can I ask whats sort of graphic design that you do?

Have you heard of Fine Art America?

This is my portfolio on FAA
https://fineartamerica.com/art/chocolatescorpi

and what about RedBubble? This is my portfolio on RB
https://www.redbubble.com/people/CHOCOLATESCORPI

They are POD- Print On Demand and you just sign up for free, upload you graphic designs onto their websites under you username and then sell your designs on their products.

They do every thing for you- they market everything, sell them, get them made, send them to the customer, deal with the returns and refunds and you get to decide how much percentage to charge on top of the cost price, which they will then pass onto you and the design will always be yours.

Quicker than making money here...