i am also an amateur.
Vetiver is Haiti or Bourbon?
I think you can try a base - middle note with Vetiver and Patchouli, maybe Cedarwood, depending if Virginian Cedarwood or Atlas... I found that Virginian Cedarwood it doesn´t mix with Vetiver as well as Atlas. I am starting, so my opinion is similiar that the opinion you can have.
As middle notes you can try with cypress and top notes a bit of black pepper and a hint of ginger. Be careful with these ingredients, cause the are strong and may dominates all mix.
Then you can try with bergamot, peppermint, mandarin... as your own taste.
How is your working method? Drops? Scale measure?
Are you going to dilute in alcohol or oil?