Jagged lines in Illustrator

[AndreeaCi]

Hello everyone.

I seem to have a problem with Illustrator. I made a "logo" ( imported a photo in Illustrator selected Template and started tracing with the line tool around the design in the photo, it's basically a kitchen photo and I traced the cabinets to make a logo). Now the problem is that my lines are jagged/ blurred and it prints like that. This is intended to be printed, I have to make a business card for a friend. 

At first I did not noticed the lines untill I exported it ( as SVG) and imported it in InDesign, because there is where I designed the business card.

I tried pretty much a lot of thing to see if I can fix the lines but with no succes. 

GPU Performance does not help, is currently on ( and it was on when I was drawing) and if I turn it off it's even worse, I think. 

Anti-aliased Artwork is also on, but also makes no difference. 

My  Preview mode is Default and High 300 ppi.

I also tried to redo everything, open a new document and start tracing again, but the lines are still the same. 

Does anyone know what is causing this? How could I fix it?

I am attaching here photos ( of the printed card) and screenshots ( from the file in Illustrator). 

Thank you in advance. 

[Monika Gause]

Sadly these days you need 100K followers on Instagram - otherwise it looks like you're just not credible.