This is my "Old School Chopper" design for Schroeder Guitars. I had to create a really long and low bike to fit a guitar fretboard for a custom inlay.  I no longer do inlay work so I'm not showing the finished product, but I did like the design
The following is a simple mock-up of what the finished inlay might look like.  No shading because there would be no engraving.
Created using Newtek Lightwave3D
Created using Adobe Photoshop