You did a great job of channeling at the femur bones, the skull looks like it kind of got away from you and you had a large dust fill are off to the left side. Did you scribe the shape before channeling or just trace with a marker? I know the skull is pretty small and hard to hold in place to scribe. I glue pieces in place with a small drop of CA and allow it to cure, scribe with shape a razor knife. I then trace the scribe marks with a white wax pencil and lightly scrape with a razor. This leaves white wax in the scribe marks that makes it easier to follow when channeling.
I make the scribe lines as tight to the inlay as possible and as deep as possible without applying too mush pressure against the inlay to avoid knocking it loose. The nice thing about a deep scribe is as your bit gets close to the scribe the wood will break away cleanly at the scribe line just before the bit gets tangent to the scribe. This really helps avoid letting the bit get away and helps insure the channel is fit size and not over cut.
It is easy enough to get away with over size channels in ebony and some darker rosewood but with lighter rosewoods and woods with varying color it is critical to have well fitted channels.
Good first attempt
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