No, its just that you get to keep all of the profit.
When you work for a capitalist they pay you a portion of the profit your labor generated to cover your labor cost (food, shelter etc.) and keep the rest for themself.
It might be better understood in Marxist terms: you have the cost of your input materials and the cost of the labor-power needed to transform them. Subtract them from the output value of the labor and you get the surplus-value. The capitalist will keep the surplus-value the laborer created for themself and the laborer gets enough to cover the cost of maintaining their labor-power.
I get what ypu are saying, but I have a different oppinion on the subject, and it appears that I have found my way to the wrong community, so I won't go into details here.
What difference in opinion do you have? Self-employed laborers get to keep all of their created Value, whereas Capitalists take value created by others.