I first made a template of the inlay on mm grid paper and transferred that to tracing paper. I cut that out and used it to draw the outline of the inlay on the body:

When the outline was drawn I made a cut of about 2 mm along the vertical lines of the middle section of the cross:
After that I gently removed the wood in between the cuts with a chisel:
The horizontal lines of the short sections of the cross cannot be cut with a saw. I used a Stanley knife to do this job and after that also removed the wood in between with a chisel:
For the actual inlay I used Rosewood. The pieces where cut roughly and sanded to their best fit. After that they where glued in and clamped:
The end result is pretty nice:
Off course it has to be sanded back since it is sticking out now but that I will save for later.


















