What's the best way to line a piece of richlite for a fretless bass?

[Random Guitarist]

Title says it all really. I recently finished a Pitbull kit build and am now dreaming of my first original  build, sketching body shapes like the deluded child I am

 

I'm not 100% sure I want lines, but would love to know my best approach to adding lines if wanted. Any advice gratefully received.

 

Many Thanks,

 

Grant.

[itu]

Lines can be added later, if in need. Side markers are what you certainly need. If you play gigs, phosphorous markers are important in a dark stage.