Great job for your first Wes. I like both the choice of timbers and the pattern, but as I suspect you are now aware of - they are very unforgiving for minor issues. The alignment of the points if even a slight bit off can become very noticeable, and the distinctive line between the Maple sections also is apparent. For your first segmenting, these are less a criticism but more of an acknowledgement that you are now getting into more detailed challenges - welcome, its a fun ride.
So, I'll offer some thoughts for you to consider and if these are well known to you just ignore. Insure that all segments are equal in dimensions where they are glued together, and that they match for whatever pattern. To minimize any glue-line, I'll suggest a veneer between the segments. A veneer separator will also assist in any slight misalignment in your glue-up; it won't fix a large mis-alignment, but for a minor one it will break the visual match just enough to help. This gives an intended line, rather than an unintended one, or one that is only visible in some sections but not others. Prior to any turning and drilling the ends are accurately marked/centered in the middle of the pattern. Insure that the tube hole was drilled in the center. There are different techniques for each of these concerns and all are manageable after you have paid your dues with a bucket of "oops." (I have 2 such buckets).
Using sanding sealer after final turning and prior to any sanding will also help with any cross contamination of wood dust. Others will also recommend mastering a skew to the point that little/no sanding is needed - that skill still eludes me.
Finally, the best recommendation I can give is - do 10 more!
I wish my first segmentation looked as good.