solved

[dreamstep]

solved

[sstar2211]

I do not know about self-employment. However, I asked officer in 2011 about how to get resident permit for working. They said a work with at least 18 hours a week OR 900e per month is needed for granting working permit for foreigners.
Therefore, even you are self-employed. I think you also should have that minimum requirement, in order to stay here.
Ask an officer if you have time and share it with people here
Regards,

[dreamstep]

Thank you very much!