The end graft (affectionately known as the "butt wedge") is dry-fit in preparation for gluing it in.
And here it is glued in, trimmed, and chiseled/scraped/sanded flush. I like to keep things simple, and let the beauty of the wood speak for itself. That's fancy-figured bubinga with black/bloodwood/black purflings, same as the rosette. The red part of the bubinga will be quite a beautiful, rich red under finish.
Next step (after some more sanding) is doing the binding, which will be curly koa, set off by just one black line of purfling (except for the top, which will be outlined with the black/blood/black purf arrangement again).