A little bit complicated for me:)

The amount is not big, 8000SEK, I read the google translated of this pdf, if I understood right, I don't have to declare if the amount is less than 50000SEK/year, right? I email to tax office but no reply after many days. Thanks for responses!

I have only A-skatt, I am employed in institutet. I do photography for fun but got a chance to sell photos to church and they paid me some amount of money. I wonder if I need to declare this extra income for tax, and how to do that. As a foreigner, I am not very familiar with the system here...