I first thought, you wanted to offer your service as an artist, but rereading it a couple of times, it looks like anything works for you. You might want to clarify, what you want as a focus and add it to the title, as most will filter by that, like artist, developer, composer, ...
I would advise also to focus on one thing first and then expand it later. F.e. Artist will make a game where graphic is the most important part like a visual novel with only "primitive" logic behind. An programmer on the other side will make a game, which heavily relies on mechanics and uses only "primitive" sprites. Even when it is not artist, developer or composer, you will find a way to just to focus on that. If level design is your strength, try f.e. mario maker. After these 11 years i would expect, that you have some kind of feeling, what part of game development you enjoy the most and with time will be good in it. Because as you are probably aware, you have many hats as a one person team, so there are many different skills needed.
Another tip could be to focus on small projects. An MMO as a starter will fail.
And to promote yourself better, show us a bit, what you have done so far. Especially as artist the different styles are again a big filter.