How to CNC acrylic stamp

Hi I am new and I am having hard time to figure out how to CNC carving.
I use solidworks 2018. I want to make stamp for soap. I have acrylic sheet.
I do not see any paper clip to attach solidworks file. Can some one please guide me thru right direction.
In solidworks what should I save. I tried STL didn’t work, I tried JPG I see 2d. Any help will appreciate.

thank you