Good looking gravlax, lemans. Like!
I use a similar recipe when making gravlax, though I've never used star anise. Normally, I use a mix of caraway and coriander. Like Holly, sometimes I'll sprinkle vodka on it. Other times it might be gin or Pernod (my favorite).
Also, when it's when it's fully wrapped and ready to cure, I put a small board or plate on top of the salmon with weights such as canned food, dry beans, etc. Helps to remove any excess water.
We traditionally serve it with a mustard sauce and pumpernickel.