>>2124>jumpstart your art-comic-manga career thing?Define "Career"
Being a desk slave is not a good thing despite being rich, if you mean as an artist who gets money and can work relatively relaxed i would say releasing a one-shot but sizeable, well written story with highly detailed pencil work.
Something like a 4 or 5 stacks that can be seen to have been polished extensively.
That or make a well written and well drawn harem story quick to the point, no matter how short.