I very much like the overall design, very elegant and eye-catching (if not very useful as a bowl unless only used for large fruit). In my opinion what lets the whole thing down is the execution of the pyrography or , come to think of it, the use of pyrography in the first place. I am not opposed to pyrography as such, but when I look at these images, what becomes clear is that instead of adding definition, here they take it away. The boundaries of the blackened struts become blurred, and even the edges of the spiral pattern in the centre of the bowl are not well defined. In addition, the thickness of the struts varies tremendously. Also, the black arms and struts now have rounded edges, and I think they would look better if they had defined edges. I also think the ebonizing would look better in this case if it had been done with either a black stain (and only use pyrographed lines to contain the stain) or spray paint (masking all the rest) or acrylic paint and fine brush.
These little things add up, especially when you go for a geometrically symmetrical decoration, and so the overall effect of an otherwise excellent project is diminished.